Ancient life may be just one possible explanation for Mars rover's latest discovery

This is a selfie taken by NASA's Curiosity Mars rover at the "Rock Hall" drill site. (NASA/Caltech-JPL/MSSS) This is a selfie taken by NASA's Curiosity Mars rover at the "Rock Hall" drill site. (NASA/Caltech-JPL/MSSS)

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White 'replacement theory' fuels racist attacks

A racist ideology seeping from the internet's fringes into the mainstream is being investigated as a motivating factor in the supermarket shooting that killed 10 people in Buffalo, New York. Most of the victims were Black.

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