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

Like hungry teen, life on Earth had big growth spurts

October 26, 2009 3:34 PM