Imagine an entire network of flying cars zooming around 2,000 meters (6,561 feet) above our congested city streets. Your morning commute would be a lot different up...
Imagine if Earth suddenly lost an entire continent. North America wouldn’t just vanish off the face of the planet, of course. Instead, it would sink into the...
You wouldn’t notice it at first. But every second, the air around you is thinning, just a little. Within 30 seconds, you’d be gasping. Engines would fail, hospitals...
Every 75 years, a ball of fire streaks across the sky. But that’s no fireball. It’s Halley’s Comet. And you’re about to hitch a ride on it. Get...
You know that feeling when you try to do a good thing and then accidentally scorch the entire planet? Yeah, the future can be terrifying. Lasers. Artificial intelligence...
Let's say, the Earth's magnetic field took a break and allowed strong solar winds to strip away our protective space-blanket. Would Earth instantly turn into a big...
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 Earth’s orbit ventured as far from the Sun as Pluto, and got as close to it as Venus? Would the Sun burn the planet to a crisp at the closest...
Dinosaurs often steal the spotlight when it comes to terrifying prehistoric creatures, but they were far from the only fearsome beasts to roam the Earth. From enormous...
What if humans had gills and could breathe underwater just like fish?
Together, the U.S., Russia, and China control nearly half of the world’s military power, dominate the global economy, and influence the most powerful international...
Things are getting hotter and hotter here on Earth, and global warming has everyone panicking. But let us try a wild idea: what if we took every drop of Earth’s water...
Seawater is salty, undrinkable, and a potential source of planet-saving fuel. Hold up. Fuel? Yes, that’s right. We have the technology to convert seawater into liquid...
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...
With so many varieties in our skin tones, hair colors, and features, the human race is a marvel of evolution. But what if we all decided to preserve our family traits...
What would happen if you flew into a wormhole? Would you ever hear back? Where would you end up? Back in time?Another galaxy? Here’s what would happen if a...
In 2010 an astronaut on the ISS observed a bizarre phenomenon. When he glanced out the window, he saw the Moon looked flattened when it appeared in the thickest part of...
One day, we want to take humanity into space. But why don’t we start small? Take one solar power station, 10,000 people, and 10 million tons of crumbled Moon rock...
No, that’s not Photoshop. That’s an actual video from the International Space Station of the Moon looking a bit squished. Wow, so what happened here? Is the...
Let’s face it. There are A LOT of us, and it’s getting more than a little crowded. Right now, there are over 7.7 billion people on Earth, and the United Nations predicts...
