Ancient Relatives of Algae Played Key Role Early CO2 Rich Atmosphere
http://www.spacedaily.com/news/early-earth-03h.html
Ancient Relatives of Algae Played Key Role Early CO2 Rich Atmosphere
"Now, a measurement of the fossil record using a new instrument has confirmed a portion of the model. Atmospheric CO2 level 1.4 billion years ago was at least ten to 200 times greater than today, according to the new research."
Same level of CO2 Mars has today. Interesting.
BD