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Tech & Science

Fossils from a South African cave are 3.4 to 3.6m years old and walked the Earth at same time as east African relatives.

Tech & Science

To best gauge vaccine effectiveness, the risk of severe disease in vaccinated versus non-vaccinated people was compared at least 14 days after a second...

Tech & Science

Bacteria for blastoff? Scientists are deploying bacteria to produce a new rocket fuel.

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