Half of the Great Barrier Reef has died since 2016 — heres what happens if all coral reefs on Earth die off
Without coral reefs, there could be a rippling ecosystem collapse in the oceans, with devastating effects on the planet.
Heres what happened on fatal Southwest Airlines flight LUV
Southwest Airlines Flight 1380 suffered a catastrophic engine failure and cabin depressurization on Tuesday.
A fire in the US midwest is so big you can see it from space — two people have been killed in the blaze so far
Wildfires blazing in Oklahoma are clearly visible from space — and they're only about 15% contained.
How much money you have to earn to be considered rich in the biggest city in every state
Being part of America's upper class varies from city to city. See what you need to earn to be rich in some of the biggest cities in the US.
Mars colonists will get blasted with radiation levels 8 times higher than government limits — heres what theyre up against
High-energy space radiation will threaten the Mars colonies that Elon Musk hopes to establish with SpaceX, as well as astronaut outposts planned by NASA.