Ja James Lo Lovelock ck 1919 1919 science was and is my passion - - PowerPoint PPT Presentation

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Ja James Lo Lovelock ck 1919 1919 science was and is my passion - - PowerPoint PPT Presentation

Jul 04, 2023 310 likes •545 views

Ja James Lo Lovelock ck 1919 1919 science was and is my passion and I wanted to be free to do it unfettered by direction from anyone Electron Capture Detector 1000 times more sensitive a planetary physician whose patient, the

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Ja James Lo

Lovelock ck 1919 1919

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“science was and is my passion and I wanted to be free to do it unfettered by direction from anyone”

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Electron Capture Detector

1000 times more sensitive

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“a planetary physician whose patient, the living Earth, complains of fever”

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The Gaia paradigm

“The earth is more than just a home, it’s a living planet and we are part of it.” James Lovelock

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Planetary atmospheres

Venus Mars Earth without life Earth as it is CO2 96.5% 95% 98% 0.03% N 3.5 2.7% 1.9% 79% O2 trace 0.13% 0% 21%

Source: Lovelock, 1998
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Earth is a self-regulating system

Source: S. Navarro, 2017
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3 evidences that earth regulates itself

Oxygen in the atmosphere Global surface temperature Ocean salinity

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Oxygen in the atmosphere

Source: Pieter Kuiper, 2010
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Regulation of the global surface temperature

Source: thecitizensofearth.org, 2015
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Daisyworld

Source: Buddhajeans.com, 2017
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Daisyworld

Source: http://gingerbooth.com/flash/daisyball/DaisyBall.html, 2017
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Regulation of ocean salinity

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Criticism

Ford Doolittle Richard Dawkins Stephen Jay Gould Lynn Margulis Nothing in the genome could provide the feedback mechanism Gaia theory proposed. Organisms could not interact in concert A metaphorical description

  • f Earth processes, not a

mechanism Gaia is not an organism!

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From hypothesis to theory

Declaration of Amsterdam (2001): "The Earth System behaves as a single, self-regulating system."

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The end

"You can't run a university unless it's divided into subjects. If you try and teach the whole lot, it becomes a complete mess and the vice-chancellor goes mad, so they have to divide it up. But if you divide it up, you can't understand it." James Lovelock