[dx_custom_adunit mobile_id=”RTK_v1lP”] Twin siblings, twin peaks, twin cities, twin planets… Two earths, one solar system. How would that work? Where...
How would the world change if, all of a sudden, every biological man disappeared? Would the world become more peaceful? Why would you have to ration food? And why...
Buckle your seatbelts. We’re about to take a ride on the cosmic superhighway. What exactly are these celestial autobahns? How would they help us explore the furthest...
Really slow. So what if evolution had the same mindset, and decided to take its time before getting rid of some prehistoric creatures? What if the giant sloth was still...
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...
Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did every planet suddenly get a twin? Where would...
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...
The Moon has been Earth’s constant companion for billions of years, shaping tides, lighting the night, and inspiring countless stories. But what if our Moon had a...
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...
Ahh, spring has sprung. Robins are chirping. Flowers are blooming. Yikes, it’s getting a little windy out. Wait a minute. Do you hear that? Is it just me or does it look...
Yet over time, they disappeared and evolved into the smaller versions we know and love today. But what if we found a way to bring them back? Why did giant mushrooms go...
A team of Russian scientists is working hard to resurrect this quintessential Ice Age behemoth. But what if they never disappeared in the first place, and still roamed...
Black holes are often imagined as cosmic vacuum cleaners, devouring everything in their path, but what would actually happen if you dared to venture into one even for...
Buildings are being destroyed, animals are dying, and trees are not able to grow. All because of rain? Wait, I thought we needed this stuff. Well, it’s not just...
Black holes are the gravitational monsters of the Universe. They are so powerful that nothing, even light, can escape their grasp. One black hole is bad enough. But if...
If you were to drill straight down into Mars, what would you find? Would the red planet reveal its true colors? Would you finally discover life on Mars? And how...
What if all the coral reefs died out? What if we lost all of our coral reefs overnight? Ocean diving would become less impressive, that's for sure. But what about the...
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...
Over 300 million years ago, before the age of giant dinosaurs, Earth was covered with giant insects. Imagine a world where dragonflies are the size of crows 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...
