What are executive orders — and how do presidents use them? Here’s what to know about them and the scope of their power.

Denver-based Boom Technology's XB-1 demonstrator plane hit Mach 1.122 — 750 mph. It's the first independently developed ...

Yoko the swell shark was born in a habitat of all-female sharks who hadn't seen a male in years. The aquarium has two ...

Washington is scrambling to interpret a new Trump administration memo that appears to halt funding for many programs. The ...

Yoko the swell shark was born in a habitat of all-female sharks who hadn't seen a male in years. The aquarium has two ...

Robert F. Kennedy Jr. has built his fortune and reputation on disparaging the government scientists and institutions he's now ...