An unexpected guest has made its way into our Solar System. It’s an interstellar object, an ISO. And it’s tumbling through space in a way that can’t be explained by...
Tired of living on an overpopulated Earth? Why not move to the O’Neill Cylinder? An artificial state-of-the-art space habitat where we can control everything...
They can lift 5,000 times their body weight. They have armies in the thousands. And they outnumber us a million to one. But ants are tiny, right? Yeah, that’s not going...
If you happened to wander into the Nevada desert and stumbled upon the secret U.S. military base, Area 51, you’d quickly be arrested, killed, or maybe even...
Yet over time, they disappeared and evolved into the smaller versions we know and love today. But what if we found a way to bring them back? Why did giant mushrooms go...
Our Solar System is plunging into chaos. Better hang on tight. The planets are getting knocked out of orbit. What could kickstart this epic chain of events? How would...
What if you had the power to control things without touching them? What if you could use your mind for anything from bending spoons to lifting cars, and even stopping...
Tyrannosaurus Rex. King of the tyrant lizards. It’s 6 meters tall (20 feet), 12 meters (40 feet) long, and it weighs upward of seven tons. You can hide from it...
Since its discovery in 1610 by Galileo, the rings of Saturn have enchanted us for centuries. Remarkably, we’ve visited Saturn before. Stunning photographs taken...
What would happen if the largest country on Earth decided it needs more territory and power? It might just go to war over it. What country could Russia invade first...
How long would something like this take? Why would this change the weather? And how hot would Earth get? If you think something like this is impossible because we...
2020 has been one of the worst years in human history. It’s been strange, confusing, and often terrifying. But what if when the clock strikes midnight on December...
Have you ever wondered what it would be like to explore one of Jupiter’s moons without ever leaving Earth? Or what would happen to your body under a monstrous...
When you look at the Earth from space, you don’t see the 241 countries and territories that we’ve divided ourselves into. You don’t see the boundaries...
Take a deep breath. We take 23,000 breaths a day; trying to get oxygen to our brain and cells. Oxygen is essential to our survival. But it’s a only small...
Interstellar objects occasionally enter our Solar System, providing insight into the composition and dynamics of distant regions of the galaxy. Among these objects, the...
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...
How would you feel if this never ended? Despite all of the masks, tests, and vaccinations, there is no guarantee that COVID-19 will ever disappear. But stick with me on...
Could we move to our new moon one day? Or is this one of those scenarios where everybody dies in the end? “Fly me to Mars..” Ahem, where were we? Right, Mars...
Unlike Earth, which is orbiting the Sun, there are billions of rogue planets roaming the Milky Way not bound to any host star. One of them has been spotted on the edge...
