Robert Liscouski told News4 he fears an attack could leave the U.S. in the dark at schools, hospitals, banks and business for days or even weeks.

Microplastics in waterways and soil are fueling calls to reduce the pervasiveness of plastic in agriculture.

An 11th-century Anglo-Saxon seal belonging to Edward the Confessor has been rediscovered more than 40 years after being declared lost. The wax impression of the ‘Saint-Denis seal’ disappeared without ...

Cities that build protected lanes for cyclists end up with safer roads for people on bikes and people in cars and on foot, a new study of 12 large metropolises revealed Wednesday.

Julian Bailey was killed by U.S. Marshals on a public street in Washington, DC. Months later, his family is still being denied access to footage and records connected to his killing after MPD denied t...

A Silver Spring pest control company is releasing mosquitoes that don't bite, to stop the ones that do.

A surprisingly common substance was found to have a causal relationship with the kind of brain damage associated with Alzheimer's disease.

Practical advice for confidently cycling around town

Dozens of technicians will fire off about 851,000 fireworks on July 4, aiming to break a world record in what organizers hope will be the "most memorable display this generation will have ever seen."

It was the second ruling in as many days against executive orders Trump has signed seeking oversight of the nation's elections.

14th and Fairmont Street, NW "Dear PoPville, I live in Columbia Heights and was on my way to run an errand (Wednesday, 12:15pm), waiting at the 14th and Fairmont (south) bus stop, when a group of arme...

The administration is expected to finalize the proposed changes as soon as this summer.

A bipartisan group of senators and two Democratic House committees have launched a fierce challenge against the National Science Foundation (NSF)

Advocates and sunscreen enthusiasts have been pushing for the U.S. to allow bemotrizinol for years.

Tales of love and adventure from 1,000 years ago reveal a dazzling range of now-extinct English pronouns. They capture something unique about how people once thought about "two-ness".

We have 45 days to express our opposition to catastrophic changes.

The new captain jumped from the deck, fully dressed, and sprinted through the water. A former lifeguard, he kept his eyes on his victim as he headed straight for the couple swimming between their anch...

Babies have died after not receiving the vitamin K shot at birth. Their autopsy records underscore how preventable their deaths could have been.

Cities that build protected lanes for cyclists end up with safer roads for people on bikes and people in cars and on foot, a new study of 12 large metropolises revealed Wednesday.