They’re in your yard, on your walls, in your attic, and there’s probably one near you right now. The thought of these creepy crawlers might make you want to go on an...
A century of history flashes before your eyes. Not the past, but the future. And now you know how life would unfold over the next 100 years. What changes would happen to...
Forty light years from Earth, there is a world that looks a lot like Venus. But unlike the most sweltering, hellish planet in the Solar System, this not so distant...
Meet comet 3I/Atlas. A collision with this rock would release the same kind of energy that a certain other asteroid did 66 million years ago, ending the reign of the...
What would happen if all the volcanoes on Earth erupted at once?
The tallest man to ever walk the Earth was 2.72 m (8’9″) tall, and he quickly became an international sensation. So can you imagine what life would be like...
There are places in the Universe where you could turn to ash, freeze to death or be completely crushed by gravity. And you’re about to visit them all. What...
With nearly eight billion people on the planet, things can feel pretty crowded. Let’s make things a bit tighter by housing every single person on Earth in one giant...
What causes moonquakes? What would happen if half of our Moon drifted away? Has the Moon already split in half? As friendly neighbors in the sky, the Moon and Earth have...
The megalodon, the big boss of our ancient oceans, the king of all sharks, killer of whales. If you’re a fan, you’ve already witnessed our megalodon vs. mosasaur episode...
What if there are other universes, just like ours? With an infinite number of Earths? With uncountable versions of you? And what if we don’t have to look too far...
627 million km (390 million mi) from Earth, underneath the cold seas of Europa, a horrifying, and vastly intelligent creature lurks. Can our human minds even comprehend...
Sulfur hexafluoride, now that’s a mouthful. It sure is! It’s more commonly known as SF6 or deep voice gas because, well, it makes your voice deeper! But...
Get your bone flute and gather around the fire. Today on What If, we’re taking you back to the time of woolly mammoths and saber-toothed cats. That’s right...
What if everyone on the planet said "no" to their gas-powered cars right now? And not just cars - gas dryers, water heaters, gas stoves, lawn mowers... What if we...
Imagine an enormous football stranded in the Solar System. I mean, the Earth shaped like one. What could cause our planet to change its shape so drastically? And what...
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...
Imagine pulling into a drive through and seeing Woolly Rhino burgers on the menu. It might sound strange today, but thousands of years ago, our ancestors depended on...
Tyrannosaurus Rex. King of the tyrant lizards. It’s 6 meters tall (20 feet), 12 meters (40 feet) long, and it weighs upward of seven tons. You can hide from it...
Let me take you on a wild ride to the very edges of our Universe. But it won’t be as simple as traveling through space. Because the edges that we’re talking...
