Imagine if all the Earth’s oxygen disappeared. Not forever, just for, say, an hour? Could you hold your breath that long? What would happen to the atmosphere? And...
One second you are out cold. The next, you’re on the operating table. In the middle of heart surgery. Welcome to your most terrifying nightmare. What happens when...
The Mullaperiyar Dam sits in India’s Kerala state, quietly performing a job it has done for more than a century. Built over 100 years ago, it plays a crucial role...
Welcome to the Solar System construction zone. Today you’ll be using our cosmic sandbox to build a brand new planet. What would you need to create a rocky planet like...
Neptune is big, it’s blue, and it is a planet that can tear you apart if you happen to drop into one of its massive, Earth-sized storms. While it might look calm and...
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...
Scroll down to watch the video. We’re talking about a fish that’s much, much smaller than a great white shark, but that’s got a bite about two times...
This would be the journey of a lifetime, if you don’t mind riding through molten rock and crushing pressure. What would you see along the way? How long...
At first glance, it looks almost identical to Earth. Its brilliant deep blue color gives the impression of vast oceans, clear skies, and perhaps even life. But this...
Dogs are often called humanity’s best friend, but even the friendliest animals can become dangerous in certain situations. Every year, millions of people are...
Welcome to the arena. Tonight’s battle is all about location, location, location. Both of our fighters are extremely territorial. They’re not interested in sharing and...
Volcanos, the ultimate natural force of destruction. They’re unforgiving, uncompromising and unstoppable. About 1,500 volcanoes around the world are considered to be...
Doesn't it suck having a noisy neighbor? Or constantly running into your ex? We all need personal space, but often find we can't get enough. Don't you wish the world was...
Mars has been photographed countless times over the years, but some images stand out above all the rest. Among them is an astonishing panorama created by NASA that...
Most people assume that by now, scientists have discovered nearly every animal living on Earth. After all, satellites can map the planet in incredible detail, and...
Imagine floating outside a spacecraft on a routine spacewalk when something goes terribly wrong. Your helmet suddenly comes loose. Normally, that would be a fatal...
You start your day hearing wild news. Jupiter has just swallowed Saturn. And it doesn’t stop there. Jupiter is on its way to swallow every planet in the Solar...
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...
Deep beneath the surface of Mallorca, Spain, an experienced cave diver found himself facing a nightmare scenario. He was trapped hundreds of meters inside an underwater...
Imagine you’re out for a walk on a lovely day, with not a care in the world. The birds are singing, and the sun is shining. Actually, the sun seems brighter than usual...
