Humanity has always looked up at the night sky and wondered what is hiding out there. Entire galaxies, black holes, strange planets, and maybe even alien civilizations...
A fear of heights, known as acrophobia, is one of the most common fears people experience. For some, standing on a tall building, looking down from a bridge, or even...
What if you actually did see dead people? Not in a Sixth Sense kind of way, but in an ‘inexplicable mass resurrection’ kind of way? Not in a Walking Dead...
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...
What if, instead of Trump or Biden becoming the next U.S. President, there was a third-party candidate? And that candidate was Elon Musk? What if Elon Musk became the...
One billion years into the future, you might imagine a world full of artificial intelligence, interstellar travel, and space colonies. Maybe we’ll see the end of...
When most people think about deadly dangers at the beach, sharks are usually the first thing that comes to mind. But the real threat hiding beneath the waves is far less...
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...
Every six years in Japan, thousands of people gather in the Suwa region to witness one of the world’s most dangerous religious festivals. Massive logs thunder down steep...
Mountains. They’re born, they grow, they age and erode. And after a very, very long life, they turn to dust. What if all mountains collapsed at once? What are the...
Do you get a little nervous before a flight? If you do, you’re not alone. Between 33% and 40% of people feel some form of anxiety when they board a plane. While a giant...
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...
Don’t Miss the Full Video Story Below The year is 2126, and Earthrise is no longer something you only see in textbooks or old footage. It is what you wake up to every...
You feel something bite into your skin. A sharp pain shoots through your body as you look down and see a powerful insect locked onto you. But the bite is only the...
A huge gas giant suddenly appears in the sky. You look up in wonder. It’s beautiful. The second Saturn replaces our Moon in its orbit, Earth would just as suddenly...
A nearby volcano is showing signs of an imminent eruption. Seismic activity is increasing, magma is rising, and the pressure beneath the surface is building. In a...
The universe is vast, ancient, and mostly silent. For decades, scientists have pointed their telescopes toward distant stars, searching for signs of intelligent life. We...
Space tourism is much closer than you may think. The International Space Station will soon retire from its successful run through low Earth orbit. But humanity’s...
You have a weight problem. And it’s not just you, it’s everyone! That’s just how life is on Earth 2.0. Double the density, double the gravity...
Elon Musk has just claimed Mars as his own personal planet. Building his own human colony on the Red Planet, independent of Earth and with it’s own set of laws...
