Coastal cities across the globe are planning how they will keep the sea away as it rises. One solution? Just move the city. How much would it cost? How do you lift a...
Taller than a six-story building. Longer than three school buses. Ten times as heavy as an elephant. The largest dinosaur ever is coming back from extinction. What would...
Jupiter is home to some big storms. Like the massive Great Red Spot, which has been swirling on the gas giant for centuries. Why don’t we bring it to Earth and see what...
When you ask someone a question, you expect a truthful answer, right? In an ideal world, people would always be honest. But research suggests reality is far messier than...
What if one day the continents joined together into one giant landmass again, and you could travel from North America to Africa on foot? What country would become your...
You’ve accidentally stumbled onto an old minefield. Surrounded by land mines buried somewhere in the ground, you don’t know where to step. One wrong move and...
Deep beneath the ocean surface, where sunlight disappears and strange creatures rule the darkness, a creature exists that looks like something from a legend. Its...
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...
Black Dolphin is famous for its extreme security, but the prison is only one part of a much larger system. Behind Russia’s prison walls, a long history of harsh...
You put on your shoe and feel a burning pain in your foot right away. Your whole leg starts feeling stiff. The room spins as your vision blurs, and your stomach clenches...
Did you know that Mars has polar ice caps just like we do here on Earth? With the right technology, they might be our water source should we ever move to the red planet...
If you got into a spaceship, and traveled long enough and fast enough, could you eventually loop back to where you started? Assuming you don’t accidentally collide...
Forget the idea of a flat Earth and imagine instead an Earth shaped like a giant slice of pizza. At first glance, it might seem amusing and even delicious to picture...
Snakes surround you on all sides. To your left and right, they coil and shift. Behind you, giant cockroaches crawl through the undergrowth. Ahead, there is only the...
Have you ever been curious about Medieval life? Would you travel back in time if you could? Do you think you would enjoy it? How long would you last? Hear ye, hear ye...
Would we all need night vision goggles? How would it affect the ocean tides? Our seasons? Or our sleep cycles? Or would the consequences be far more drastic? As the...
There’s a giant, peanut-shaped object orbiting the Sun, and it’s name is Halley’s comet. Like all comets, it’s a cosmic mashup of frozen ice, gases, and dust...
This rogue star has been traveling the Universe. And now, it’s finally entering our Solar System. But this isn’t just any regular star. It’s known as a...
The Sun isn’t the biggest thing in our Solar System. And it’s not Jupiter, either. But close. It’s Jupiter’s very own magnetic field. What would it be...
Wouldn’t it be cool to see things through any wall and any door? How about seeing through your own skin? Or your dog? No, no, no, and no. Of all superhero powers...
