Oxygen increase and nitrogen fixing (Introduction)

by David Turell , Friday, February 28, 2014, 05:36 (3921 days ago)

Set the stage for more complex life, but, big BUT, life did not have to bcome more complex just because the conditions made it more likely. Thre is anogher driving force we have not yet found.:-http://www.sciencedaily.com/releases/2014/02/140227125508.htm