What did the Earth look like about 2 billion years ago, when the planet’s atmosphere was being oxygenated?
Click here for original story, Tracing Earth’s past in prehistoric rock deposits
Source: Phys.org
What did the Earth look like about 2 billion years ago, when the planet’s atmosphere was being oxygenated?
Click here for original story, Tracing Earth’s past in prehistoric rock deposits
Source: Phys.org