Cambridge, MA–(ENEWSPF)–August 16, 2011. Today, oxygen takes up a hefty portion of Earth’s atmosphere: Life-sustaining O2 molecules make up 21 percent of the air we breathe. However, very early in Earth’s history, O2was a rare — if not completely absent — player in the turbulent mix of primordial gases. It wasn’t until the “Great Oxidation Event” (GOE), nearly 2.3 billion years ago, when oxygen made any measurable dent in the atmosphere, stimulating…
