Science

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

Apr 02

Is pot getting more potent?

The average potency of pot has more than tripled in the past two decades, according to testing done for the federal government. This comes just over a year after Colorado and Washington legalized the drug and as many other states…

Mar 24

What happens in a mudslide? A geologist answers

ARLINGTON, Wash. — Authorities have confirmed that the landslide on the Stillaguamish River north of Seattle has killed several people and destroyed homes. EarthFix’s Ashley Ahearn turned to Dave Montgomery to find out what caused the slide. Montgomery is a…