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Hold the Arsenic

When NASA astrobiologist Felisa Wolfe-Simon released a study in December 2010 that described a bacterium that seemed to grow on arsenic and incorporate it into its DNA, researchers were at first amazed. Some, however, were skeptical, and tried to replicate Wolfe-Simon's work.

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The World Health Organization will be providing low-cost COVID-19 tests to low- and middle-income nations, according to Reuters.

Nature News examines how the confirmation of Amy Coney Barrett to the US Supreme Court could affect scientific agencies.

Nobel Prize-winner Arthur Ashkin, who developed optical tweezers, has died at 98, the Washington Post reports.

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