Fossil and molecular evidence suggests that complex multicellular organisms originated and proliferated during the Neoproterozoic Era (1,000-541 million years ago). Extreme glaciations during the Cryogenian period (720-635 million years ago), a phenomenon commonly referred to as Snowball Earth, led to a radical transformation of the Earth’s climate and oceans. New research suggests that Snowball Earth was an environmental trigger for the proliferation...
