The delicate balance of the entire Solar System exists in a gravitational dance between planets. Swap the orbits of two of them and you could end up wreaking all kinds...
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...
A black hole is on a collision course with our Sun. And there’s nothing left for you to do except sit back and watch the destruction of our entire Solar System. How...
It’s the terrorizing stuff of an anxiety-riddled movie plot. A house break-in can be very traumatic, and leave you feeling vulnerable. It can even threaten your...
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...
On April 15, 1989, Hillsborough Stadium in Sheffield, England, was filled with anticipation. Around 54,000 fans gathered for the FA Cup semi final between Liverpool and...
Would you ever want to buy your own planet? Even if it was just the size of a house? It could be the perfect vacation spot! Unbeatable privacy and breathtaking views...

