This shift in Earth’s tectonic tempo had profound implications above ground. With less volcanic carbon dioxide heating the ...
Underknown on MSN

Evolution of Humans

Life on Earth began in a way that still boggles the mind. Around 4.5 billion years ago, a chemical process called abiogenesis ...
Rodinia broke apart approximately 750 million years ago ... The era may have set the stage for the proliferation of more ...