The Event That Transformed The Earth

This was the most important event that changed the earth forever and introduced life on Earth as we know it. The first approximation of life on Earth was thought to be about 3.5 billion year ago and even in South Africa there is evidence of that in the rocks of the Mpumalanga escarpment. According to this research the oxygen appearance was a billion years earlier. During this period of climate change it is important to understand the previous history of the development of climate and life.

BBC: The Event That Transformed The Earth