Trees have been standing silently beside us for thousands of years. They have witnessed changing climates, the rise and fall of civilizations, and countless generations...
Just north of the Martian equator lies a 45 km (28 mi) wide impact crater that scientists believe may have been the site of an ancient lake. Here at Jezero Crater...
Over the past century, astronomers have speculated about the existence of a mysterious 9th planet lurking in the outer reaches of our solar system. Although we’ve...
Millions of years ago, the Earth looked very different. A huge landmass, called Pangea, covered about a third of our planet. But about 175 million years ago, the Earth...
Betelgeuse is one of the most famous stars in the night sky. Sitting on the shoulder of the Orion constellation, this enormous red supergiant is nearly 950 times wider...
When you think of threats from outer space, you might picture deadly solar flares, planet destroying asteroids, or even a hostile alien invasion. But scientists warn...
Gun-related deaths and injuries occur around the world everyday. In the United States alone, there are more than 100 gun-related deaths daily. And 200 more people are...
About 65 million years ago, a mass extinction event occurred, wiping out more than 75% of all species on Earth. There have only been 5 mass extinctions in our...
While we don’t want to alarm you, most accidental deaths can occur right in your home. Poisoning, falls, choking, drowning, fires and burns top the list of the most...
You wake up one morning and something feels wrong. The usual sounds of traffic outside your window are gone. There are no voices, no footsteps, and no signs of everyday...
Elon Musk says he wants to send one million people to Mars by the year 2050. The SpaceX CEO has become famous for making huge promises about colonizing the red planet...
If the Earth had an edge, it might look something like this, the edge of a flat Earth. A vast frozen wall at the horizon, trees growing at strange angles, and a sky that...
Polyhedrons come in all shapes and sizes. Anything that has multiple faces joined at their edges can be a polyhedron. Picture Earth as a six-sided cube. Or as a...
Mars didn’t always look like this. It may have once been covered in oceans. But what if we brought all the Martian water back and transformed the red planet into...
About 66 million years ago, Earth was struck by one of the most powerful events in its history. A massive asteroid, roughly the size of a mountain, was racing through...
In the beginning, there was nothing. Well, except for you. And the Big Bang. What would the first moments of the Universe be like? What would happen over the next...
Taller than a six-story building. Longer than three school buses. Ten times as heavy as an elephant. The largest dinosaur ever is coming back from extinction. What would...
As thrill-seekers, we like to do a lot of extreme, gravity-defying stunts to push our limits. If base jumping or caving is your thing, how about taking a tumble all the...
Herbs. Honey. Moldy Bread. Animal Feces. In ancient times, these were the go-to remedies for disease and infection. We’ve come a long way since then. Or have we...
You’re halfway through your flight when you start feeling nauseous. You don’t usually get airsick. But today you’re feeling terrible. What...
