View Full Version : Ancient Zircons Help Reveal Early Earth Atmosphere

2011-Dec-01, 10:10 PM
Roughly 2.4 billion years ago, Earth’s atmosphere underwent a huge change known as the “Great Oxidation Event”. This switch from an oxygen-poor to an oxygen-rich environment may be accountable for giving rise to life. However, scientists are extremely curious about what our atmosphere may have been like not long after our planet formed. Now researchers [...]

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