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TrumpRx is aimed at helping patients use their own money to buy medicines. But researchers who study drug pricing warned that many patients could pay too much if they use the site.

The court ruled that it was unconstitutional to bar state agencies from investing with firms that the state had accused of boycotting the oil industry.

By playing pretend with an ape, scientists found a human hallmark in our closest living relative: the capacity for make-believe.

During a dive off Argentina, scientists documented a rare jellyfish discovered a little over a century ago and seldom seen since, as well as the fish that keep it company.

Joseph Yracheta was in charge of a repository that compiled and protected tribal health data. Then its funding was cut.

San Ramon, Calif., has been rattled by dozens of small earthquakes in recent months. Even in a region used to regular shaking, it's been a lot.

Food makers will now be able to claim that their products have "no artificial colors," so long as they use dyes that are not petroleum based.

Beijing, Moscow and shaken American allies are seeking new warheads as President Trump ends more than a half century of nuclear arms control with Russia.

The company's data will be essential for many states to comply with new work requirements for the health insurance program that take effect next year.

The A.M.A.'s announcement followed a similar recommendation from the American Society of Plastic Surgeons. Other medical groups argued for a more personalized approach.