The mysterious Denisovans

Little is known of the mysterious Denisovans. These distant relatives of the Neanderthals roamed eastern and southern Eurasia but left little trace of their time on Earth.

New microfossils suggest earlier rise in complex life

Microfossils from Western Australia may capture a jump in the complexity of life that coincided with the rise of oxygen in Earth's atmosphere and oceans, according to an international team of scientists.

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