Cyanobacteria, a primitive photosynthetic organism, generated the oxygen needed for living creatures to grow from microbes to humans to whales.
Cyanobacteria, a primitive photosynthetic organism, generated the oxygen needed for living creatures to grow from microbes to humans to whales. Purdue University / MCT
Cyanobacteria, a primitive photosynthetic organism, generated the oxygen needed for living creatures to grow from microbes to humans to whales. Purdue University / MCT

Politics & Government

October 26, 2009 3:34 PM

Like hungry teen, life on Earth had big growth spurts

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