The next link is about the Oxygen crisis (imagine that)
http://en.wikipedia.org/wiki/Oxygen_Catastrophe
Quote:
|
The Oxygen Catastrophe was a massive environmental change believed to have happened during the Siderian period at the beginning of the Paleoproterozoic era of the Precambrian, about 2.4 billion years ago. It is also called the Oxygen Crisis, Oxygen Revolution, or The Great Oxidation......
|
__________________
This whole internet thing is probably not a passing fad.-Ronald Brak
While speech might be free, consequences cost.-Doodler
|