There are over 600 species of rays, including stingrays, skates, manta rays, and sawfish, and they come in many sizes. Rays ...

We’ve all heard of the world’s most massive sharks, both past and present. The megalodon, the great white shark, and the ...

Nightline follows students who struggle with substance abuse -- including alcohol, meth and fentanyl -- as they fight for their recovery in hopes of graduating from Denver’s 5280 High School.

America's largest power grid struggles to meet demand amid a tech industry power grab—but that's not the only issue.

The Gulf’s commercial menhaden fishery is killing and wasting 22,000 redfish annually in Louisiana but still less than recreational anglers.

The Oura ring 4 is the pick of the bunch, topping our guide to the best smart rings thanks to its in-depth health insights and robust build. Released in October last year, this Amazon Prime Day deal ...