There’s a reason why the idea of aliens living at the bottom of the sea keeps popping up in popular culture. Many of us are far more afraid of what lies down there than...
What was meant to be a once in a lifetime adventure quickly turned into one of the deadliest volcanic disasters ever recorded on camera. Whakaari, also known as White...
On June 10, 1990, British Airways Flight 5390 was preparing for a routine journey from the United Kingdom to Spain after a short delay. On board were Captain Timothy...
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...
Within the vastness of the Universe, humanity is not that big of a deal. We’re not here because we’re meant to be here, we’re just… here. If...
In 1850, 94% of the world’s population lived in extreme poverty. Today, we’ve managed to bring that number down to roughly 10%. And if this trend continues...
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...
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...
Deep beneath our feet lies one of the most important parts of our planet: Earth’s core. Hidden thousands of kilometers below the surface, this massive sphere is...
If modern snakes already make your skin crawl, you should be thankful you never had to share the planet with their prehistoric ancestors. Millions of years ago, Earth...
Black holes are dense and scary. They suck up everything in their way. Their gravity is so strong it bends light and warps time. But what if I told you we might have...
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...
We’ve thrown a lot of disasters at Earth over the years: from asteroids and aliens, to the Sun’s death. But hey, the Universe is a dangerous place, and we’re not...
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...
Scroll down to watch our video. The Moon’s surface is made up of long-dead volcanoes and impact craters from asteroids. But have you ever wondered what might be...
Today on What If, we’re going to build the highest bridge on planet Earth. Welcome to the Qinghai-Tibet Plateau, the “Roof of the World.”It’s home to the world’s...
Forget a doomsday asteroid or melting permafrost. It’s the freezing of Earth’s core that will end the world in today’s episode. Or would it? Because maybe, just...
This shiny metal is constantly in a liquid state. This is mercury. We normally see this metal in tiny quantities. But what would happen if we took thousands of liters...
It’s the year 80 CE, and the Colosseum is packed with over 50,000 roaring spectators. The games are about to begin. But you are not in the crowd. You are in the arena...
Imagine being able to sunbathe all day long. But instead of getting a nice tan to show off… You turn green! And get lazier. Don’t worry. It’s not the...
