The world you know no longer exists. Your family, friends, and neighbors are gone. Outside, horrific zombie-like creatures roam the streets. And if you breathe in their...
The next time you see that adorable hummingbird at your feeder, remember one thing. It might take your life. Because in this world, every bird works for the government...
What do saber-toothed tigers, woolly mammoths and the dodo all have in common? They’re all extinct, and some theorize humans played a large part in this. What if...
Everybody loves a good sleep, but we probably wouldn’t enjoy it as much if we had no control over when it happened. Imagine falling into a deep sleep during a...
The Solar System may appear calm and well organized, but it is actually the result of billions of years of delicate cosmic balancing. Changing the order of the planets...
Imagine looking up at the moon and seeing space dust floating around it. Maybe broken-off parts of the moon are raining down on Earth. You’d wonder what happened;...
In the past few billion years, Earth has been pummeled by asteroids, crashed into other planets and frozen over several times. Not to mention being ruled by all kinds of...
Imagine if all the Earth’s oxygen disappeared. Not forever, just for, say, an hour? Could you hold your breath that long? What would happen to the atmosphere? And...
They’re not the biggest falls on Earth, not by a long shot. But they’re certainly among the most famous. Niagara Falls attracts millions of visitors from...
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...
Humans have been evolving for the past six million years. But something’s gone terribly wrong. And now we are evolving backward. Once this process began, how long...
It may sound unusual that a little bug could be this deadly, but it’s true. Mosquitoes spread diseases like malaria, yellow fever and the dengue virus. They do it...
What if you could time-travel a hundred years from now. How would the planet look like? Would human beings still be in the picture? Only in the past year, our...
In 2018, the Earth had about 1,730 billion barrels in crude oil reserves, with oil companies pumping out about 94.7 million barrels each day. The Wall Street Journal...
What if we told you that within the next 100 years, humans could merge with AI, control the weather, and even bring extinct species back to life? From space exploration...
The miracle of life. A 40-week process where you developed from a single cell to fully formed human baby. All within in your mother’s womb. Now, imagine you were...
The two biggest planets in our Solar System in one telescope view. And catastrophe is imminent. If Jupiter and Saturn suddenly were on a collision course, which of the...
If you could, would you live on the Moon? Not as one of the courageous early settlers, but as a citizen of a fully-functioning Moon city. What would they be built out of...
The Amazon rainforest stretches for millions of kilometers, hiding ancient tribes, animals and maybe something else. What if under this mysterious canopy lies an...
We think of space as an icy void, where temperatures drop to hundreds of degrees below zero and astronauts need layers of thermal protection just to survive. But what if...
