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VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20260308T163435Z
UID:https://www.mpia.de/events/37148/3438937
DTSTART;VALUE=DATE:20240306
DTEND;VALUE=DATE:20240307
CLASS:PUBLIC
CREATED:20240315T155257Z
DESCRIPTION:It is generally accepted that reducing conditions are essential
  to synthesize the ingredients of life. However\, geological records datin
 g back close to - but not quite - the Hadean eon suggest that the Earth's 
 atmosphere was oxidizing. Then how was the primordial soup prepared on ear
 ly Earth? Combining insights from geology\, chemistry\, and astronomy allo
 ws us to see the bigger picture in an interdisciplinary approach. We are f
 ree of any bias towards one of the many proposed mechanisms that might hav
 e contributed to the reduction of the Hadean atmosphere. To address this\,
  we extend an established photochemical model of the Earth's atmosphere wi
 th several different proposed sources of reducing gases. We systematically
  study their impacts as well as their interplay. Coupling this with a wet-
 dry cycling model of small bodies of water on the first land masses allows
  us to predict the abundance of life's building blocks on our planet.\nSpe
 aker: Klaus Paschek
LAST-MODIFIED:20240315T155650Z
LOCATION:Haus der Astronomie\, Room: Klaus-Tschira-Auditorium
ORGANIZER;CN=Thomas K. Henning:mailto:henning@mpia.de
SUMMARY:HIFOL Colloquia: Overcoming the Non-Reducing Atmosphere Dilemma of 
 Life:Agnostic Survey of Prebiotic Methane and HCN in the Hadean Earth's At
 mosphere
URL;VALUE=URI:https://www.mpia.de/events/37148/3438937
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