A new theory explains why and how the earth evolved from an oxygen-deficient environment to the modern oxygenated world with the ocean playing a significant role in the process.
United States governors aim to boost spending on climate change programs and to address the impact of severe weather conditions like floods and wildfires.
The cause of the mass extinction during the Permian era was due to the foul smelling toxic microbes that impact organisms that were poisoned by the very earth itself.