A viral selfie taken in Virunga speaks volumes about a beautiful relationship.
Synchronized fireflies gather for a 'rave' in the Great Smoky Mountains
April 23, 2019, 3:07 p.m. by Catie Leary
Every June, the Elkmont Ghost Town in Great Smoky Mountains National Park lights up with the world's largest gathering of synchronous fireflies.
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The bittersweet beauty of Greenland's melting glaciers
April 23, 2019, 1:45 p.m. by Jacqueline Gulledge
These aerial images highlight the devastating effect global warming has on the arctic.
Bobcat displaced by California's Woolsey Fire gives birth to 4 kittens
April 23, 2019, 9:24 a.m. by Mary Jo DiLonardo
The bobcat had set up a den in someone's backyard.
15 weird medical treatments that we used to think worked
April 23, 2019, 8:13 a.m. by Cory Rosenberg
Mercury, bloodletting, radioactive water and even heroin are just some of the treatments doctors used to prescribe.
Are SpaceX's dreams of sending humans to space on hold?
April 22, 2019, 5:08 p.m. by Michael d'Estries
The private space race to send humans to the ISS and beyond is about to enter a new nail-biting phase.
Most parents want kids to learn about climate change, but most schools don't teach it
April 22, 2019, 3:54 p.m. by Christian Cotroneo
Here's how to start the conversation at home.
Brazilian river dolphins are much more social than we thought, biologists find
April 22, 2019, 3:13 p.m. by Ben Bolton
Dolphins were once thought to be loners, but video proves otherwise.
A destructive species is making its way across the East Coast
April 22, 2019, 1:47 p.m. by Robin Shreeves
Spotted lanternflies are hitching a ride on everything from camping gear to Christmas trees.
Every single minute of physical activity helps health, study shows
April 22, 2019, 1:35 p.m. by Melissa Breyer
New research finds that even small moments of activity can help you meet the weekly requirement for exercise.
'Gruesome Grannies' and 10-year-olds shut down London for the Extinction Rebellion
April 22, 2019, 12:06 p.m. by Lloyd Alter
Climate activists of all ages are demanding change now.