God & Nature Magazine
  • Winter 2023 Issue
    • Letter From the Editors
    • Braden, A Modern Bestiary
    • Garte, Assembly Theory
    • Defoe, The Heavens Declare
    • Greenberg, Bonding
    • Barrigar, God's Big Story
    • Phillippy, Overcoming Paradox
    • Bostrom, Near
    • Clifford, Hidden Figures
  • Fall 2022 Issue
    • Letter Fall22
    • Curry, Attentiveness
    • Russo, Deconstruction
    • Touryan, Four Forces
    • Mittchell, Three Words
    • Philippy, Math Theology Fall 22
    • Bostrom, Goodbyes
    • Clifford FAll 22
    • Linsley, Mystic Exile
    • Hall, A Call to Arms
  • Summer 2022 Issue
    • Letter Summer 2022
    • Engelking, Neurotheology
    • Kelley, Environmentalism
    • Garte, Sandpipers
    • Madison, Cultivating Contentment
    • Collins, Answers on Evolution
    • Touryan, Tentmakers
    • Oord, Ever-Creative God
    • Bostrom, Mentors
    • Clifford, Carbon and Sin
    • Campbell, Just, In Time
  • Past Issues
    • Spring 2022 Issue >
      • Letter from the Editors Spring 2022
      • Curry, Knowldege and Truth
      • Pinkham, On a Car Emblem
      • Murray, Candling the Egg
      • Carr, Music, Math, Religion
      • Smith, Wonder and Longing
      • Linsky, Cyber Service
      • Bostrom, Buteo
      • Obi, Coincidences
    • Winter 2022 Issue >
      • Garte &Albert Letter Winter 2022
      • Thuraisingham Pondering Invisible
      • Cornwell Mediations from Molecular Biologist
      • Fagunwa Blsck Scientist & Church Father
      • Garte A Dialogue
      • Gonzalez Being Human
      • Klein Naturalist in Two Worlds
      • Bostrom Creeds
      • Clifford Winter 2022
      • Ardern Contact Points
      • Cooper Imagine No Christmas
    • Fall 2021 Issue >
      • Garte &Albert Letter Fall2021
      • Johnson, God Winks
      • Cottraux, Ancient Aliens
      • Arveson, Anti-Vax Email
      • Gammon, Evolutionary Insights
      • Mitchell, No One Told Me
      • Rummo, Faith in the Invisible
      • Bostrom, Fall Furrows
      • Lemcio, A Franciscan Weekend
      • Funk, Plant Haiku
      • Robinson & Lim, Who is God?
    • Summer 2021 Issue >
      • Garte &Albert Letter Sum2021
      • Warren, Immunization and Salvation
      • Defoe, Bernard Ramm
      • Cornwell Canine to Divine
      • Mix, Running with Nature
      • Pinkham, Scuba Divers
      • Cao, Physics and Bible
      • Bostrom, Sugar Birds
      • Clifford Sum21
      • Oostema, Evolution of Faith
      • Hall, Generation upon Generation
    • Spring 2021 Issue >
      • Garte and Albert Letter Spring 2021
      • Loikanen, Divine Action
      • Madison, Humus and Humility
      • Lappin, Puddles and Persons
      • Cornwell, God's GPS
      • Touryan, Contolled Fusion
      • Russo, Vaccine and Salvation
      • Bostrom, Short-eared Owl
      • Redkoles, Expect Unexpected
      • Clifford, Boring
      • McFarland, Imposition of Carbon
      • Lemcio, Manis Mastodon
    • Winter 2021 Issue >
      • Winter 2021 Contents >
        • Garte and Albert Letter from the Editors
        • Burnett How iit All Started
        • Isaac Director's Corner
        • Ruppel Herrington, First Editor
        • Burnett Origin of Lire
        • Hearn Balance
        • Middleton Natural Theology
        • Story Antibodies and Randomness
        • Lamoureux I Sleep a Lot
        • Warren Overloaded Brains
        • Isaac Knowledge of Information
        • Bancewicz Wonder and Zebrafish
        • Oord Photoessay
        • Albert Hope in Winter
        • Clifford Storytelling & Drama in Teaching
        • Pohl The Column (Poetry)
    • Fall 2020 Issue >
      • Letter from Editors
      • Pohl, Panpsychism and Microbiome
      • Reyes, Communion During Loss
      • Griffin, Hands On
      • Azarvan, Science and Limits
      • Cornwell, Search Engines for God
      • Thuraisingham, Duality of Humans and Particles
      • Touryan, Prayers of Petition
      • George, Perfect Vision
      • Declare the Glory, Green: Awe
      • Bostrom Purpose
      • Oord, Theological Photoessay
      • Clifford, Food, Water, Waste
    • Summer 2020 Issue >
      • Summer 2020 Contents >
        • Editors Letter Summer2020
        • Jones, Science Faith Duopoly
        • Mix, God and the Virus
        • Warner, COVID-19 and Goodness of Creation
        • Gonzalez, Pandemic and Groaning of Creation
        • Johnson, Star Wars Food
        • Pyle, It Takes a (Medical ) Village
        • Arveson, Use for 3D Printers
        • Peterson, Pandemic and Research
        • Zeidan, Mentorship Online
        • Oleskeiwicz, Dragonfly on Water
        • Carr, COVID-19 and Climate Change
        • Nierrman, The Squirrel
        • Cornwell, COVIS-19 Bucket List
        • Bostrom, Grass Thoughts
        • Clifford, Summ20 Conflict
    • Spring 2020 Issue >
      • Letter from the Editors SP20
      • AD
      • Murphy, Nature and Calvary
      • Dickin, The Flood and Genesis 1
      • Gruenberg, Empiricism and Christian Spirituality
      • Ungureanu, Science, Religion, Protestant Tradition
      • Russo, How does it End?
      • Siegrist, Problems with Materialism
      • Ohlman, 20/20 in 2020
      • Warren, Rock Frogs
      • Edwards, Sanctuary
      • Bostrom, Clothed
      • Clifford, The Lent of Lockdown Spring 2020
      • Hall, 1:30 AM on a Tuesday (Poem)
    • Winter 2020 Issue >
      • Letter from the Editor Winter 2020
      • AD
      • Wimberly Inheritance, Meaning and Code
      • Defoe; A Pastor's Journey
      • Mix The Ends of the World
      • Pevarnik Limits of Physics
      • Greenberg "Godly" Science
      • Pinkham Teleological Thinking
      • Alexanian How to Witness
      • "Declare the Glory" Neal, Cross, Gait
      • Clifford "Across the Pond" Winter 2020
      • Oord "Theological Photoessays" Winter 2020
      • Salviander The Objective Man (Poem)
      • Ohlman Orphan of the Universe (Poem)
      • Lemcio Grey's Anatomy (Poem)
    • Fall 2019 Issue >
      • Letter from the Editor Fall 2019
      • Phillippy Mathematics and God
      • Pohl & Thoelen Databases
      • Garte Limits of Science
      • Mitroka Healthy Lifestyle
      • Sigmon Science and Revelation
      • Mariani Compatibility Creation and Evolution
      • Anders Theistic Evolution
      • Touryan Are we alone
      • Johnson Purpose and Source
      • Declare the Glory Curry, Smith, Best
      • Clifford "Across the Pond" Fall 19
      • Oord "Theological Photoessays Fall 19
      • Eyte Cross Cascade "Poem"
    • Summer 2019 Issue >
      • Letter from the Editor Summer 2019
      • Arveson Is There a “Theory of Everything”
      • Anderson The History and Philosophy of Science and Faith
      • Tolsma Science in Church
      • Salviander Black Holes and Atheism
      • Johnson Practical Problems for Literal Adam
      • Hall God and the Assumptions of Scientific Research
      • Linsky Overcoming Misconceptions
      • Wilder Sanctity of Creation
      • Clifford "Across the Pond" Summer19
      • Oord "Theological Photoessays" Summer 2019
      • Flaig Time and Me (Poem)
    • Spring 2019: Creation Care and Environment >
      • Letter from the Editor Spring 2019
      • Bancewicz;Sustainability Pledge: Why the Environment is My Problem
      • Lin; Environmental Problems as a Place for Compromise and Dialogue
      • Garvey; Where the Fall Really Lies
      • Lewis; Solar-Powered Life: Providing Food, Oxygen and Protection
      • Garte; Time and Human Impact on the Environment
      • Mays; Reforming Science Textbooks
      • Carr; Cosmic Energy First, Then Matter: A Spiritual Ethic
      • Kincanon; The Young Earthers and Leibniz
      • Declare the Glory Gauger
      • Clifford "Across the Pond" Spring 2019
      • Oord; Photoessay. Theological Photo Essays
      • Rivera; Photoessay. Digital Artwork: Images of Jesus
      • Albert; Poem. A Goldfish Sings a Tentative Psalm
      • Armstrong; Poem Holy Sonnet XI
    • Winter 2019: Education and Outreach 2 >
      • Letter from the Editor, Winter 2009
      • Applegate; Project Under Construction: Faith Integration Resource for High School Biology
      • LaBelle; Sidewalk Astronomy Evangelism - Taking it to the Streets!
      • Reed; Speaking to the Heart and Mind of Students about Evolution and Creation
      • Marcus; The Conflict Model
      • Rivera; The Implicit Assumptions behind Hitchen's Razor
      • Russo; Redeeming Bias in Discussion of Science and Faith
      • Fischer; Origins, Genesis and Adam
      • Clifford Column, Winter 2019
      • Gait; Photoessay - Stripes
      • Lee; Poem. In Chaos and Nothingness
    • Fall 2018: Education and Outreach 1 >
      • Letter from the Editor Fall 2018
      • Glaze; A Walk within Two Worlds: Faith, Science, and Evolution Advocacy
      • Johnson; Teaching the Controversy in Texas
      • Cootsona; Mere Christianity, Mainstream Science and Emerging Adults
      • Kindstedt; Creating a Third Culture
      • Zeidan; An Effective Way to Integrate Supportive Communication and Christian Belief into Virtual Classrooms
      • Marshall; A New Model of Causation
      • McClure; Nothing in the Bible Makes Sense Except in the Light of Grace
      • Frank; Christianity, Science and Teamwork
      • Assad/Reyes; Interview. Discovering a Renewed Sense of Awe and Wonder about God
      • Clifford Column Fall 2018
      • Menninga; Photoessay. What do These Stones Mean?
    • Summer 2018: Judgment and Peer Review >
      • Letter from the Editors Summer 2018
      • Jones; Peer Review: Avoiding Judgmentalism
      • Arnold; Discovering Spiritual Information Through Peer-Reviewed Science
      • Peterson; Peering at Double-Blind Peer Review
      • Smith; A Philosophical Influence from the Scientific Revolution on Scientific Judgment
      • Mix; The Poetry of Probability
      • Mobley; Randomness vs. the Providence of God?
      • Gordon; Chances are Good: Design and Chance in Genesis 1
      • Siegrist; But the Multiverse...!
      • Reyes; The Community Table: Interview with Marianne Johnson
      • Clifford Column Summer 2018
      • Hill; Poem. Synthesis
      • Lemcio; Poem. I Could See Where This was Going
      • Oord: Photoessay
    • Spring 2018: Chance & Design >
      • Letter from the Editors
      • Bishop; God, Love and Chance
      • Bonham; Quantum Reflections
      • Spaulding; God as Designer
      • Garte; Teleology in Evolution
      • Hall; God, Chance and Buridan's Ox
      • Pohl; Why We Need a Third Culture in Church
      • Dorman; Liturgical Brain
      • Warren; Galapagos
      • Blanchard; On Christian Science
      • Touryan; The Cross as a Cosmic Filter
    • Winter 2018: Race & Inheritance >
      • A Note from the Editors
      • Essay: “Some Pastoral Considerations of CRISPR CAS 9 Gene Editing” by Mario A Russo
      • Essay: “The Genetics and Theology of Race” by Sy Garte
      • Essay: "Grieve the Segregation of Science" by S. Joshua Swamidass
      • Poem: "Cardboard Man" by Ciara Reyes
      • Featured Interview: “Love Is Risk” with Carolyn Finney
      • Essay & Poem: “Abortion Languages: Love, fear, confusion and loss”
      • Essay: "Why the Church Needs Intersectional Feminism" by Emily Herrington
      • Essay: “Elected to Salvation (and other things?)” by Bill Leonard
      • Essay: “Local Colour: A reflection on family, history, and heritage” by Mike Clifford
      • Interview: Corina Newsome, environmentalist and animal keeper
      • Essay: “Spiritual Kin Selection” by Steve Roels
      • Photo Essay: "Trouble in Paradise: Plastic pollution in the Bahamas" by Grace Swing & Robert D Sluka
      • Essay: “Race & Inheritance: Personal reflections and annotations” by Walt Hearn
      • Interview: Carla Ramos, molecular biologist
      • Clifford Column; Discipine Hopping
      • Lemcio; Waves
      • Harris Artwork
      • Hearn; Eulogy - Beyond Science,
    • Summer 17: Cosmology & Theology >
      • Letter from the Editors: Summer 2017
      • Essay: "The News from My Home Galaxy" by Walt Hearn
      • Interview: "Deep Incarnation & the Cosmos: A Conversation with Niels Henrik Gregersen" by Ciara Reyes & Niels Henrik Gregersen
      • Photo Essay: "Breath & Dust" by Kathleen Eady
      • Essay: "Why the Eagle Nebula Just Doesn’t Do It For Me" by Mike Clifford
      • Essay: "The Cosmos in My Hand" by Lucas Mix
      • Interview: “What is Life? On Earth and Beyond” with Andreas Losch
      • Artwork by Missy Pellone
      • Essay: "When God & Science Hide Reality" by Davis Woodworth
      • Essay: "​In Search of Wonder: A Reflection on Reconciling Medieval and Modern Cosmology" by Monica Bennett
      • Essay: "If Christianity and Cosmology Are in Conflict, Whose Side Is Philosophy on?" by Vaughan Rees
    • Winter/Spring 17: "Flesh & Blood" >
      • Letter from the Editor: Winter/Spring 2017
      • Essay: "Probiotics, Prebiotics, Synbiotics: On microbiomes and the meaning of life" by John F. Pohl
      • Essay: "With All Your Mind" by Paul S. Kindsedt
      • Essay: "The Stuff of Life" by Mike Clifford
      • Essay: "Experiencing God’s Love in a Secular Society: A Christian experience with socialized medicine" by Alison Noble
      • Poem: "The Problem with Pain" by Eugne E. Lemcio
      • Essay: "Thoughts of Death in a Cruel World: Job’s suicidal ideation and the “right” Christian response to depression" by Jennifer Michael Hecht and Emily Herrington
      • Essay: "Tissues at Issue" by Walt Hearn
      • Essay: "The Dilemma of Modern Christianity" by Tony Mitchell
      • Poem: "Light" by Billie Holladay Skelley
      • Essay: "Some Theological Implications of Science: Revisiting the Ant" by Mario A. Russo
    • Summer/Fall 16: "Stewardship of Words" >
      • Letter from the Editor: Summer 2016
      • Levity: "Walt Being Walt: Excerpts from the ASA newsletter" by Walt Hearn (compiled by Jack Haas & Emily Ruppel)
      • Poem: "A Prayer Tribute to Walt and Ginny Hearn" by Paul Fayter
      • Essay: "Authentic Science & Authentic Christian Faith" by Paul Arveson
      • Essay: "On Modern-Day Saints & Epistles" by Emily Ruppel
      • Essay: "​Mathematics and the Religious Impulse" by Karl Giberson
      • Poem: "The Wasteful Gene" by Eugne E. Lemcio
      • Three Poems by Dan Eumurian
      • Excerpts from: "The Dictionary of Daily Life in Biblical and Post-Biblical Antiquity" by Edwin Yamauchi
      • Essay: "A Comprehensible Universe: The blessing from God that makes science possible" by Bob Kaita
      • Poem: "The Epistolarian" by Emily Ruppel
    • Spring 16: "Brain Science" >
      • Letter from the Editor: Spring 2016
      • Essay: "Ancient Q, Modern A (?)" by Walt Hearn
      • Essay: "Souls, Brains and People: Who or what are we?" by Gareth D. Jones
      • Essay: "A Functional Theology of Psychopathology" by Edgar Paul Herrington IV
      • Three Poems by Richard Gillum
      • Essay: "Thoughts of Death in an Unkind World: Job’s suicidal ideation and the “right” Christian response to depression" by Jennifer Michael Hecht
      • Short Story: "Malefic" by Jeffrey Allen Mays
      • Essay: "An Engineer Visits a Mindfulness Workshop" by Mike Clifford
      • Essay: "Traces of Trauma in the Body of Christ: The case of The Place of Refuge" by Elizabeth Hernandez
      • Essay: "Did God ‘Create’ Science? Christianity and the uniqueness of the human brain" by William H. Church
    • Winter 16: "Quantum Physics/Epigenetics" >
      • Letter from the Editor: Winter 2016
      • Essay: "God and the New Evolutionary Biology" by Sy Garte
      • Essay: "Quantum Mechanics and the Question of Divine Knowledge" by Stephen J. Robinson
      • Essay: "Creation Out of... Physics?" by Joshua Scott
      • Essay: "Of Books and Bosons" by Mike Clifford
      • Essay: "Words, Words, Words" by Walt Hearn
      • Poem: "Encountering Ernst Haeckel’s 'Ontogeny Recapitulates Phylogeny'" by Eugene Lemcio
      • Essay: "The Extended Evolutionary Synthesis: New conversations and theological questions at the horizons of modern science" by Michael Burdett
      • Poem: "The Difference" by Emily Ruppel
      • Essay: "Maupertuis's Ghost: Finding God in 'action'" by Colin C. Campbell
    • Fall 15: "Technology" >
      • Letter from the Editor: Fall 2015
      • Essay: "‘Braving the New World (Wide Web): Mapping Theological Response to Media" by Justin A. Bailey
      • Poem: "Entropy and Enthalpy" by Glenn R. McGlaughlin
      • Essay: "‘How Proactive Should Christians Be in Learning about Emerging Biomedical Technologies?" by D. Gareth Jones
      • Essay: "‘Can We Fix It? Erm..." by Mike Clifford
      • Poem: "To My Dear Parents" by Sarah Ruden
      • Essay: "‘Which Side, Lord?" by Walt Hearn
      • Poem: "The Column" by John F. Pohl
      • Essay: "‘Technology and the Church" by Derek Schuurman
      • Poem: "On the Shores of Oroumieh" by Emily Ruppel
      • Essay: "‘Technology as Discipline" by Johnny Wei-Bing Lin
    • Summer 15: "Doubt" >
      • Letter from the Editor: Summer 2015
      • Essay: "‘The Road Not Taken’: A personal reflection on careers, counterfactuals and callings" by Tim Middleton
      • Essay: "The Gift of Doubt in My Life" by Rev. Paul Herrington
      • Poem: "The Marsh Birds" by Sarah Ruden
      • Essay: "On St Brendan and the Pendulum of Postgraduate Study" by Mike Clifford
      • Essay: "Doubt: The Invisible Conversation" by Karl W. Giberson
      • Essay: "Doubt, Faith, and Crevasses on My Mind" by Peter M. J. Hess
      • Poem: "Magdalene" by Leonore Wilson
      • Essay: "Breaking Barriers, Ministering in Relationships, and Exemplifying the Gospel" by Stephen Contakes, et al.
      • Poem: "On the Extinction of Matter Near a Black Hole" by Ruth Hoppin
      • Essay: "Sometimes I Doubt..." by Walt Hearn
      • Essay: "The Risks of Love and Life's Big Questions" by Thomas Jay Oord
    • Spring 15: "Animals/Imago Dei" >
      • Letter from the Editor: Spring 2015
      • Essay: "50 Years of Wilderness: a Christian perspective" by Peter van der Burgt
      • Essay: "All Creatures Great and Small " by Walt Hearn
      • Essay: "Let There Be Less: A Christian musing on nature, faith, and farmers’ markets" by Emily Ruppel
      • Poem: "The New Plant and Animal Kingdoms" by Steve Roels
      • Essay: "Of Wonder and Zebrafish" by Ruth Bancewicz
      • Essay: "The Lion, the Spider and the Image of God" by Mike Clifford
      • Cat Poem 1: "Lullaby for Stomp the Cat" by Sarah Ruden
      • Cat Poem 2: "Letting the Dog In" by Emily Ruppel
      • Cat Poem 3: "Reading on the Couch" by Carol Ruppel
      • Essay: "Angry Discussions: A Wrong Way to Stand for Creation Care or Science Advocacy " by Oscar Gonzalez
      • Essay: "Ethical Eating on a Catholic Campus: Some thoughts from a student of environmental studies" by Grace Mican
    • Winter 15: "Information" >
      • Letter from the Editor: Winter 2015
      • Essay: "What Does it Mean to Know?" by Mark Shelhamer
      • Essay: "Knowledge of Information" by Randy Isaac
      • Photo Essay: "Being Here" by Carol Ruppel
      • Essay: "Truth Anyone?" by Walt Hearn
      • Poem: "Transformation" by Ruth Hoppin
      • Interview: "Unpacking Chance, Providence, and the Abraham's Dice Conference" by Olivia Peterson
      • Essay: "On Knowledge and Information–Tales from an English childhood" by Mike Clifford
      • Poem: "Space Travel" by Ruth Hoppin
      • Essay: "Resuming the Science/Faith Conversation" by Jamin Hubner
    • Archives >
      • Past Contributors
      • Unpublished Materal >
        • Richard Graven A Vision of God
      • Fall 14: "History of Science & Christianity" >
        • Letter from the Editor: Fall 2014
        • Essay: "Orchids: Why the founders of modern science cultivated virtue" by Ruth Bancewicz
        • Essay: "Science Falsely So Called: Fundamentalism and Science" by Edward B. Davis
        • Essay: "The Other 'Atom' in Christianity and Science" by Karissa D Carlson
        • Poem: "The Hermit" by Ciara C. Reyes
        • Essay: "Players" by Walt Hearn
        • Essay: "Using Storytelling and Drama in Engineering Lectures" by Mike Clifford
        • Essay: "Is There Anything Historical About Adam and Eve?" by Mike Beidler
        • Essay: "Finding Harmony in Controversy: The early years of the ASA" by Terry Gray and Emily Ruppel
        • Levity: "Fish n' Chips" by Mike Arnold
        • Essay: "Stories" by Walt Hearn
      • Summer 14: "Christian Women in Science" >
        • Letter from the Editor: Summer 2014
        • Essay: "I Really Did That Work: A brief survey of notable Christian Women in Science" by Lynn Billman
        • Essay: "He + She = We" by Walt Hearn
        • Photo Essay: "The Faces of Nature" by Susan Limone
        • Essay: "On Grass that Withers: Overloaded brains and spiritual discernment" by Janet Warren
        • Interview: "Ancient Humans and Modern Choices" with Briana Pobiner
        • Essay: "Crystallographer, Quaker, Pacifist, & Trailblazing Woman of Science: Kathleen Lonsdale’s Christian Life 'Lived Experimentally'” by Kylie Miller and Stephen M. Contakes
        • Artwork: "Eden, Zion" by Harold Sikkema
        • Essay: "Asking the Right Question" by Dorothy Boorse
        • Interview: "Not So Dry Bones" with Mary Schweitzer
        • Essay: "Is Being a Mother and a Scientist Worth It?" by Abby Hodges
        • Essay: "Playing God: A theological reflection on medicine, divine action, and personhood" by Ann Pederson
        • Column: Great Gravity! "BNL 1976 – 2000 (Part 1)"
      • Spring 14: "G&N: The 2-year tour" >
        • Letter from the Editor: Spring 2014
        • Essay: "Political Science?" by Walt Hearn
        • Comic: "Education"
        • Essay: "Finding Hominids with Kamoya Kimeu" by Fred Heeren
        • Poem: "Ziggurat (and Helix)" by Amy Chai
        • Creative Nonfiction: "One Summer" by Dave Harrity
        • Essay: "Do the Heavens Declare the Glory of God?" by Owen Gingerich
        • Comic: "Miracle Mechanics" by Emily Ruppel
        • Essay: "I Sleep A Lot" by Denis O. Lamoureux
        • Poem: "Angels and RNA" by Walt Hearn
        • Comic: "Seminary"
        • Essay: "The Elegance of Antibodies" by Craig M. Story
        • Photo Essay: "Conversing with Nature" by Thomas Jay Oord
        • Essay: "Under the Tutelage of Trees: Arboreal Lessons on Virtue, Kinship, and Integrity" by Peter M. J. Hess
        • Comic: "Humor"
        • Essay: "Science and Scientism in Biology" by Sy Garte
        • Interview: "Biopsychology and Faith" with Heather Looy
      • Winter 14: "Health & Medicine" >
        • Letter from the Editor: Winter 2014
        • Poem: I Have a Piece of Cow in My Heart
        • Essay: Acts of God: Are all mutations random?
        • Column: Beyond Science
        • Poem: Psalm 1859
        • Essay: The Tao of Departing
        • Essay: The Tao of Departing p 2
        • Photo Essay: Walking in Winter
        • Essay: A Christian Doctor on Evolution, Faith, and Suffering
        • Opinion: Making Friends with Frankencorn
        • Poem: Chiaroscuro
        • Interview: "Biopsychology and Faith" with Heather Looy
        • Essay: "The Elegance of Antibodies"
        • Artwork: "Helix" by Harold Sikkema
        • Column: Great Gravity! "Dissertations and Revelations"
      • Fall 13: "Environmentalism" >
        • Letter from the Editor: Fall 2013
        • Poem: Time
        • Essay: Is there Hope for the Ocean?
        • Artwork: "Earthly Tent" by Harold Sikkema
        • Essay: What is Responsible Eating?
        • Essay: Are We Too Obsessed with Food?
        • Poem: Conversation on Creation
        • Essay: Creation Care from the Perspective of a Conservation Geneticist
        • Essay: Mobilizing Scientists for Environmental Missions
        • Poem: Paleocene Spring
        • Interview: Dorothy Boorse
        • Column: Beyond Science
        • Essay: New Testament Motivation for Environmental Stewardship
        • Poem: Stone of House
        • Column: Great Gravity! "Running the Data"
      • Summer 13: "Science & Creativity" >
        • Column: Beyond Science
        • Letter from the Editor: Summer 2013
        • Column: Faith on the Field
        • Poem: Trying Not to Be Too Sunny
        • Comic: "Work in Progress"
        • Essay: Do the Heavens Declare the Glory of God?
        • Essay: Science, Faith, and Creativity
        • Essay: One Summer
        • Comic: "Miracle Mechanics"
        • Featured Essay: Poetry for Scientists
        • Artwork: "Confluence" by Harold Sikkema
        • Column: Great Gravity! "The Great Ungainly Journey West"
      • Winter 13 >
        • Letter from the Editor: Winter 2013
        • Column: Faith on the Field
        • Comic: "Apples to Apples"
        • Creative Nonfiction: "One Winter"
        • Column: Clearing the Middle Path
        • Essay: Science and Scientism in Biology
        • Poem: "Angels and RNA"
        • Feature Article: I Sleep A Lot
        • Poem: "Fragile"
        • Column: Beyond Science
        • CiS 2012 Student Essay Contest: Runner Up
        • Essay: Why Awe?
        • CiS 2012 Student Essay Contest: First Place
        • Column: Great Gravity! "A Bit of Perspective"
        • Column: Modern Frontiers, Ancient Faith
        • Column: Time Capsule
      • Fall 12 >
        • Letter from the Editor: Fall 2012
        • The Director's Corner
        • Column: Faith on the Field
        • Comic: "Education"
        • Interview: Greetings from Mars!
        • Column: Clearing the Middle Path
        • Photo Essay: "Conversing with Nature"
        • Comic: "Abe"
        • Essay: Evolution and Imago Dei
        • Poem: "Locus Iste"
        • Levity: Beyond Science
        • Essay: God, Occam, and Science
        • Opinion: Humility and Grace
        • Levity: Great Gravity! "The College Years"
        • Poem: "Q.E.D."
        • Essay: My Overlapping Magisteria
        • Column: Time Capsule
      • Summer 12 >
        • Table of Contents
        • Letter from the Editor: Summer 2012
        • Director's Corner
        • Column: Faith on the Field
        • Column: Modern Frontiers, Ancient Faith
        • Comic: "Seminary"
        • Poem: "Temptation in the Wired Wilderness"
        • Levity: Beyond Science
        • Opinion: "The Breaking Bread"
        • Comic: "Humor"
        • Column: Clearing the Middle Path
        • Poem: "Ziggurat (and Helix)"
        • Levity: Great Gravity! "The Grade School Years"
        • Opinion: "Adam and the Origin of Man"
        • Poem: "Missa Solemnis"
        • Column: Time Capsule
      • Spring 12 >
        • Table of Contents
        • Letter from the Editor: Spring 2012
        • Director's corner
        • Column: Faith on the Field
        • Column: Time Capsule
        • Poem: "From Where do We Come?"
        • Featured Scientist
        • Levity: Beyond Science
        • Essay: "Faith and Science"
        • Fiction: "A Matter of Dust"
        • Levity: Great Gravity! "The Early Years"
        • Opinion: "Phony Environmental Theology"
        • Fiction: "Illumination"
        • Interview: "Process"
        • Column: Modern Frontiers, Ancient Faith
    • Spring 13 >
      • Letter from the Editor: Spring 2013
      • Column: Faith on the Field
      • Faith on the Field, cont.
      • Poem: Scientist's Psalm
      • Essay: A Downcast Spirit Dries Up the Bones: More perspectives on depression
      • Artwork: "Lipo Osteo" by Harold Sikkema
      • Feature: The Bible, Evolution, and Grace
      • Column: Beyond Science
      • Book Review: Prisoners of Hope
      • Column: Great Gravity! "The Grad School Years"
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God and Nature ​                                                                                      Spring 2019

Solar-Powered Life: Providing Food, Oxygen, and Protection 
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By Ray Lewis

He makes grass grow for the cattle,
    and plants for people to cultivate--
    bringing forth food from the earth.

Psalm 104:14 (NIV)

 
God provides for all of life in multiple ways, and many of these ways are highlighted in Psalm 104. The provision of food is through plants, as testified by the Psalmist. Since plants and algae photosynthesize, we could say that life on earth is solar-powered. In photosynthesis, plants capture the sun’s energy as chemical energy (food), using the carbon dioxide (CO2) in the atmosphere, and producing oxygen (O2). All organisms, including plants and animals, can extract the chemical energy for life’s processes through respiration, using the food and oxygen, and releasing carbon dioxide. While the basic balance of materials between photosynthesis and respiration has been known for about 200 years, the details of the chemical processes of photosynthesis have been gradually worked out since then, and progress on understanding these complex processes is continuing to the present day. Whether focusing on the big picture of the balance of photosynthesis and respiration, or looking at the details of how photosynthesis works, our understanding of these processes have brought us to realize that photosynthesis is as amazing as it is essential for life to continue.

"...not only has God provided food for all of life through photosynthesis, He has provided oxygen so that the chemical energy in food could be efficiently utilized..."
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There are several ways that living organisms capture light into chemical energy, but only one way has dominated: oxygenic photosynthesis. This simply means photosynthesis that converts energy-poor carbon dioxide in the atmosphere into energy-rich sugars, while producing oxygen (by splitting water). There are other types of photosynthesis, as well as other ways of capturing light energy into chemical energy, that don’t result in producing oxygen (1). These additional types are found in a variety of bacteria, but they are rare in comparison to oxygenic photosynthesis. In order to achieve oxygenic photosynthesis, two photosystems (complexes composed of proteins and other molecules) capture and utilize the light energy. The complex called Photosystem II is responsible for splitting water (H2O) in order to make oxygen, with the hydrogen atoms and their accompanying electrons being used to convert carbon dioxide to sugar. It is not easy to split water in this way, and the details of how Photosystem II does this continue to be worked out (2).

This mechanism has been incredibly effective - there are many kinds of photosynthetic organisms that use this type of photosynthesis. While the first to come to mind may be the great diversity of green land plants, nearly half of the world’s photosynthesis is performed by simpler organisms known as algae that live in the oceans that cover most of our planet, as well as in freshwater lakes and streams. Some of these are green in color, while others are red, brown, golden, or blue-green. These various colors are due to different photosynthetic pigments in the algae that have the common function of absorbing light in order to capture the light energy so it could be stored in chemical form.

A more complete story of how oxygenic photosynthesis became the mechanism used by all these diverse kinds of photosynthesizers has emerged from studies of algae and plants over the past several decades. It appears that oxygenic photosynthesis arose in a group of bacteria known as cyanobacteria (also called blue-green algae) over three billion years ago. The several thousand species of cyanobacteria that presently occur on earth live primarily in fresh and marine waters all over the planet.

Some of these are very small single-celled organisms, and the smallest yet most abundant photosynthetic organism in the world is the cyanobacterium Prochlorococcus. The tiny cells of Prochlorococcus were first discovered by MIT oceanographer Penny Chisholm in the 1980s, using specialized flow cytometers that were able to detect these cells (they were too small for the fine mesh nets used to capture other ocean algae) (3). There are an estimated 3 X 10^27 (that is, three octillion, or three billion billion billion)  
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Prochlorococcus cells on earth (4), occurring in densities of about 100,000 cells/ml from the surface to 200 m deep over much of the warm oceans between latitudes of 40° N and 40° S. These cells might be small, but this recently found organism accounts for about 5% of the photosynthesis in the world, and the discovery of the large role played by Prochlorococcus and other tiny photosynthetic species has changed our understanding regarding productivity and food webs in the oceans.

In geological strata, there is evidence that the concentration of oxygen in the environment increased starting over three billion years ago, and this is likely due to the growing abundance of cyanobacteria that could perform oxygenic photosynthesis. It appears that little oxygen was present in the atmosphere for a long time, since most of it reacted with elements in the earth’s crust. Then oxygen began to accumulate in the atmosphere starting about 2.3 billion years ago in what has been called the Great Oxidation Event, with oxygen levels coming up to about 10-20% of the current concentration (5). This event is sometimes called the Oxygen Catastrophe because oxygen was toxic to many organisms, causing them to go extinct. But this setback appears to have been temporary, as evidenced by the diversity of life on the planet at present that not just tolerates oxygen but requires it to live. In other words, oxygenation by cyanobacteria was one step in preparing the way for living organisms that would utilize oxygen for life, including humans.

So it appears that oxygenic photosynthesis had its origin in cyanobacteria, and scientists conclude that photosynthesis in algae and plants originated by combining a cyanobacterium with a nonphotosynthetic cell via endosymbiosis (endo- meaning inside, symbiosis meaning life together).  This would mean that a single-celled organism that ingests other cells for food captured a cyanobacterium inside but did not break it down to get the chemical energy out of it. Instead, the cyanobacterium continued to live inside the larger cell, producing food energy by photosynthesis for both itself and its larger host cell. There are many known examples of species exhibiting endosymbiosis in which a photosynthetic cell lives inside a host cell (6).




The light reactions of oxygenic photosynthesis are depicted here,
including the key role of Photosystem II in splitting water to
produce oxygen, as well as the rest of the energy capture process
to produce ATP and NADPH which are subsequently used to fix
​carbon dioxide to make carbohydrates


In the origin of chloroplasts, it appears that over time, some of the DNA  from the photosynthetic endosymbiont was transferred to the host cell in which it was living, while other DNA was degraded. Eventually, the endosymbiont became the photosynthetic plastids (such as the green chloroplasts in green plants) that perform photosynthesis inside the cells of algae and plants. Some of the proteins that are active inside the plastid are encoded by genes in the nucleus of the cell. The rest of the proteins that work in the plastid are encoded by genes that are on a relatively short circle of DNA inside the plastid. When scientists were able to determine the sequences of DNA from plastids and compare them to all other known forms of life, they were most similar to those of cyanobacteria. This similarity provided the strongest evidence that plastids originated from cyanobacteria via endosymbiosis. In addition, finding DNA sequences in the nucleus that were similar to those from the endosymbiont shed light on the kind of endosymbiotic gene transfer that would accompany the endosymbiotic origin of plastids.

This initial endosymbiotic event gave rise to both green and red algae, with tens of thousands of species currently known to scientists. Some green algae gave rise to the great diversity of land plants, of which we have identified several hundred thousand species. But the borrowing of photosynthetic machinery through the fusion of two kinds of cells did not stop here. There are two groups of algae (euglenids and chlorarachniophytes) in which the plastids were obtained via endosymbiosis of green algae, and there are several others (such as diatoms, dinoflagellates, brown algae, and others) that obtained their plastids through endosymbiosis involving single-celled red algae.

​Thus, the green and red algae would have obtained their plastids from cyanobacteria in primary endosymbiosis, while other algae would have obtained their plastids from green or red algae in secondary endosymbiosis. In secondary endosymbiosis, the nucleus of the endosymbiotic alga eventually was lost (except in a few forms where a remnant nucleus, or nucleomorph, remains), but the plastids with their capability to perform photosynthesis were kept (7). There are even a few examples where it appears that plastids arose by tertiary endosymbiosis. Thus, oxygenic photosynthesis in all of these organisms had its start in the cyanobacteria, and oxygenic photosynthesis was multiplied many times over until we have the world we have today, with the atmosphere today containing a whopping 21% oxygen.

While oxygen is essential for life as we know it, it was toxic to the organisms that first produced it. In fact, recent research indicates that overcoming oxygen toxicity was a key step that had to accompany the endosymbiosis of the oxygen-sensitive host cell and oxygen-producing photosynthetic cell. But there is an additional global benefit to having oxygen in our atmosphere. Oxygen absorbs damaging ultraviolet (UV) light, which is part of the light coming to the earth from the sun. In the process of absorbing UV radiation, oxygen (O2) will react to produce ozone (O3). Ozone will then absorb both UV-C and most of UV-B radiation, both of which would cause damage to living organisms, especially to the DNA. The remaining UV-B radiation that comes through is able to cause sunburns and some DNA damage. But with most of the UV radiation absorbed by oxygen and ozone, life on earth is protected from significant damage.

So not only has God provided food for all of life through photosynthesis, he has provided oxygen so that the chemical energy in food could be efficiently utilized, and ozone to absorb harmful UV radiation. He has blessed the earth with the conditions to be fruitful in many ways, and learning more about these processes helps us understand the riches of these blessings, the depth of God’s wisdom and love, and the might of his power to bring all of this about.

Image Credit: US Dept. Energy, Office of Biological and Environmental Research

 
References
  1. Bryant, D.A. and Frigaard, N.-U. 2006. Prokaryotic photosynthesis and phototrophy illuminated. Trends in Microbiology 14 (11): 488-496.
  2. For example, Suga, M. et al. 2017. Light-induced structural changes and the site of O=O bond formation in PSII caught by XFEL. Nature 543, 131–135; Kawashima, K., Takaoka, T., Kimura, H., Saito, K. & Ishikita, H. 2018. O2 evolution and recovery of the water-oxidizing enzyme. Nature Communications 9, Article number: 1247.
  3. Chisholm, S. W., R. J. Olson, E. R. Zettler, J. Waterbury, R. Goericke, and N. Welschmeyer. 1988. A novel free-living prochlorophyte occurs at high cell concentrations in the oceanic euphotic zone. Nature (London) 334: 340–343.
  4. Pennisi, E. 2017. Meet the obscure microbe that influences climate, ocean ecosystems, and perhaps even evolution. Science doi:10.1126/science.aal0873.
  5. Holland, Heinrich D. 2006. The oxygenation of the atmosphere and oceans. Phil. Trans. R. Soc. Lond. B Biol. Sci. 361: 903–915.
  6. A variety of photosynthetic endosymbionts as well as other types of endosymbionts are reviewed by Nowack, E.C.M. and Melkonian, M. 2012. Endosymbiotic associations within protists. Phil. Trans. R. Soc. Lond. B Biol. Sci. 365: 699–712.
  7. Keeling, P.J. 2013. The number, speed, and impact of plastid endosymbioses in eukaryotic evolution. Ann. Rev. Plant Biol. 64:583-607.
 
Raymond J. Lewis (PhD, University of California, Santa Barbara) is associate professor of biology at Wheaton College. His research and teaching interests include genetics and physiology of marine algae, environmental ethics, theories of origins, and botany. He has published a number of articles in scientific journals, is coauthor of the textbook Understanding Scientific Theories of Origins (2018), and is a member of the American Scientific Affiliation, the International Phycological Society, and the Phycological Society of America.

God & Nature magazine is a publication of the American Scientific Affiliation, an international network of Christians in science: www.asa3.org