Geologists have dubbed Earth’s middle age the “boring billion.” Occurring some 1,800 to 800 million years ago, it has long been considered a period when little happened on Earth in terms of biological evolution, climate, or the chemistry of the oceans and atmosphere. But emerging evidence now suggests that the “boring billion” may have been far more dynamic than that.
Click here for original story, Earth’s ‘boring billion’ years of stagnant, stinking oceans might actually have been rather dynamic
Source: Phys.org