Science

Follow PBS NewsHour’s complete coverage of Science and Technology stories.

Sep 30

U.S. stem cell clinics boomed while FDA paused crackdown

The Food and Drug Administration gave clinics three years to show that their questionable treatments were safe and worked. But today none of the clinics have won FDA approval and there are more businesses than before selling the treatments for…

Sep 29

U.S. declares 23 species extinct

It’s a rare move for wildlife officials to give up hope on a plant or animal. But scientists say climate change threatens to make extinctions more common as it adds to the pressures facing imperiled species.

Sep 28

Youth climate activists Vanessa Nakate and Greta Thunberg have chastised global leaders for failing to meet funding pledges to help poor nations adapt to a warming Earth and for delivering too much “blah blah blah’’ as climate change wreaks havoc.