"What are some of the astronomical events that make it possible for there to be life on Earth?"
-
Increased H2S in the Deep Ocean - Bad News for Life?
May 16, 2005 / Posted by: Shige Abe
NAI scientists on the Penn State and University of Colorado teams published recently in Geology their studies showing that increases in the level of hydrogen sulfide in the deep ocean during oceanic anoxic periods in Earth’s history could cause elevated H2S levels in shallower waters and in the atmosphere. This may have caused, they propose, destruction of the ozone shield and an increase in atmospheric methane, and may have helped spell the end for life at several extinction events.
Source: [Link]
- NAI Launches FAR Seminar Series on October 6th
- Early Earth Primed for Later RNA and DNA Production
- Molecules in the Atmospheres of Extrasolar Planets - A Workshop in Paris
- Cyanobacterial Biomarkers in Ancient Rocks
- Evolution of the Gut
- Jill Tarter and Will Wright Talk Gaming, Education, and Evolution in Seed Magazine's Video 'Salon'
- NASA Chooses MAVEN as the Next Mars Scout Mission
- NASA's Carl Sagan Fellows to Study Extraterrestrial Worlds
- Looking for Life on Mars in a Canadian Lake
- Mars Research in Polar Bear Country
