Humans & Society

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upper jaw with teeth

LUCY’S RELATIVE  Fossils discovered in Ethiopia, including this partial upper jaw with teeth, come from a hominid species that lived alongside Lucy’s species between 3.5 million and 3.3 million years ago, researchers say. 

DNA illustration

Clinical experiments that use DNA-editing methods to alter human germline cells have been put on hold in the United States.

John Nash

Mathematician John Nash died in a car accident May 23 at the age of 86, ending a dramatic story of genius. 

Humans & Society

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