10 flying objects people have mistaken for alien spaceships
Many things that are reported as UFOs turn out not to be extraterrestrial at all. Here are 10 "UFOs" that were very much of this world.
Sean Kane
Some animals can clean themselves, while others get 'dirty' on purpose — here are some of the wildest grooming practices in the animal kingdom
From the self-cleaning house cat to the self-anointing Capuchin monkey, animals on Earth have varying grooming techniques.
The strange and somewhat icky reason we call people 'Type A' personalities goes back to the tobacco industry
The health risks of "Type A" personality come from a dubious source.
7 strange and surprising ways that humans have recently evolved
Evolution is very much still happening today — and it's happening to us.
The biggest explosion before atom bombs hit a town with a 52-foot-tall tidal wave
Halifax, Nova Scotia, was torn apart after a Norwegian freighter slammed into a World Word I-era ammunition ship.
Making margaritas can give you painful second-degree burns
If you're going to mix lime juice, tequila, syrup, and ice into a classic drink, stay indoors to avoid a serious "margarita burn."
The coolest NASA missions happening right now — and the most exciting ones yet to launch
NASA didn't stop doing awesome stuff in space after Apollo. We're orbiting Jupiter, roving Mars, probing the edge of the solar system — and the universe.
Which US state is closest to Africa? It's not Florida
The Sunshine State's easternmost point, Singer Island, outside of West Palm Beach, is about 4,085 miles from Guerguerat, a small village in Western Sahara.
Which state is closer to Japan, Alaska or Hawaii? The answer may surprise you
Given our spherical world and some quirks of geography, the answer is not as straightforward as you might think.
8 surprisingly common causes of death that sound like freak accidents
We dug through the CDC's cause of death list. It's both morbid and fascinating.
7 space mysteries that scientists can't explain
We've just begun to scratch the surface.
Here's the science behind why you should never eat on the go
Is walking while eating bad for you?
RANKED: These are the most dangerous sharks in the ocean
Here are 14 reasons to watch where you swim.
Here's where outer space actually begins
How far do you have to go to officially be an astronaut? We've compiled a graphic of Earth's layers of air, their heights in miles, and where space begins.
7 science-backed reasons you should make art, even if you're bad at it
Artistic pursuits aren't just fun — scientific research shows that they're actually strengthening your brain.
New findings reveal how Earth-like Mars once was
The Red Planet wasn't always a rust-colored desert — it used to be a lot more like our own planet.
7 delicious grocery store foods you may not recognize on the farm
These fruits, nuts, and vegetables you buy in the store are almost entirely unrecognizable to anyone but farmers and pickers.
The latest 'Game of Thrones' episode reminded fans that crowds can kill people
Jon Snow's fight against suffocation in the Battle of the Bastards accurately shows how dangerous a group of stampeding people can be.
5 remarkable adaptations that allowed humans to conquer the world
It wasn't just our big thinking brains that helped us rule Earth.
NASA is about to light a trash fire in space
The space agency is lighting a 3-foot-long box on fire inside the Cygnus spacecraft — but it doesn't know what will happen next.