It was supposed to be the ultimate waterslide experience. Towering 52 meters, or about 170 feet, above the ground, the attraction promised riders an extreme journey...
Hundreds of meters underground. Large enough to house tens to hundreds of thousands of people. And walls strong enough to withstand the force of a nuclear blast. These...
During all ice ages in Earth’s history, global temperatures dropped well below freezing across the planet. And it wasn’t just a few icy trips around the Sun...
You’re flying 1 km (3,000 ft) above the ground, hanging below a huge tank of burning gas. Yeah, and that tank is now on fire! Will the impending explosion tear you apart...
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...
On August 17, 1996, the Delventhal family, a family of five from Pittsburgh, was reaching the end of their nine day canoe trip in Algonquin Park, Canada. After setting...
How do you distinguish between past, present, and future? Is there really an order to time? Does it only move forward? Does it move in any direction at all? Stop the...
Imagine what it would be like if you could wake up in your New York City apartment at 7:00 a.m., and make it to your job in London, England by 9:30 in the morning. That...
Since its discovery in 1610 by Galileo, the rings of Saturn have enchanted us for centuries. Remarkably, we’ve visited Saturn before. Stunning photographs taken...
Humanity’s nuclear arsenal is capable of destroying all life on Earth. Over. And over. And over. Maybe it’s time we dumped it far away. We might want to inhabit...
Not too far from Earth is a giant space rock that has silently played host to just twelve people in its entire history. What would happen if we put our cosmic satellite...
How much do you know about black holes? What would happen if you fell into one? Say one day you were exploring space looking for a new planet for humans to inhabit, but...
The Universe is packed with worlds where sunsets don’t just fade into night, they bend the rules of physics. From double sunsets to glowing ice and strobing pulsars...
Most people dream about adventure, but very few are willing to face the brutal reality of climbing Mount Everest. Rising along the border between Nepal and China...
On the waters of the Amazon, an ancient world flows below your feet. But make a wrong move, and part of this world may end up inside you. Better get out of the water...
As you’re waiting in line to deposit your paycheck, you see a group of people entering the bank, demanding money and threatening to kill everybody if they...
Did you know that a single snake bite can kill an adult elephant in just a few hours? And if you’re not careful, snake venomc can kill you in only 15 minutes. But...
It’s been over 200 million years since South America broke off Africa into its own continent. But now it’s behaving very strangely. It’s taking on water and going down...
For thousands of years, ancient cities have disappeared beneath forests, deserts, and modern landscapes. Entire civilizations have been forgotten, leaving behind only...
What would happen if you dumped one of the world’s coldest liquids into the boiling, volatile mouth of a volcano? Would it freeze all of the lava inside? Could it...
