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Articles on Early Earth

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An artist’s impression of the Earth around 2.7 billion years ago in the Archean Eon. With green iron-rich seas, an orange methane-rich atmosphere and a surface dominated by oceans, the Archean Earth would have been a very different place. (Illustration by Andrey Atuchin)

Where did the Earth’s oxygen come from? New study hints at an unexpected source

Could tectonic processes in the early Earth have contributed to the rise of oxygen?
Stone arrowheads (Maros points) and other flaked stone implements from the Toalean culture of South Sulawesi. Shahna Britton/Andrew Thomson

Who were the Toaleans? Ancient woman’s DNA provides first evidence for the origin of a mysterious lost culture

The first ancient human DNA from the Indonesian island of Sulawesi — and the wider Wallacea islands group — sheds light on the early human history of the region.

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