You’re alone at night when you hear a noise in your house. Your heart is racing as you go to check it out. You go to check your room. And there’s someone...
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...
The Solar System looks stable. Planets in their lanes, everything running on schedule, the same arrangement holding for billions of years. Now picture looking up one...
Imagine being able to travel to any point in time. Where would you go, and what would you do? You could witness some of the greatest moments in history or even change...
Imagine boarding a one hour flight with your mother on Christmas Eve. You’re 17 years old. The holidays are here. In just a little while, you’ll be...
At first glance, a sloth hardly looks like an animal you should be afraid of. It moves slowly, spends most of its life hanging from tree branches, and often appears to...
From a bad hair day to a tragic natural disaster, wind can be extremely disruptive. Wind can be a formidable foe. But what if this powerful force just didn’t exist...
A Hole in Earth’s Magnetic Shield Is Drifting and Splitting in Two, and Satellites Are at Risk
There is a weak spot in the magnetic shield protecting our planet, and it is not staying still. It drifts slowly westward, and measurements suggest it may be splitting...
What if, instead of Trump or Biden becoming the next U.S. President, there was a third-party candidate? And that candidate was Elon Musk? What if Elon Musk became the...
Most people assume that being struck by an intense beam of radiation would be instantly fatal. For Soviet physicist Anatoli Bugorski, it should have been. Instead, he...
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...
What if you found out that you had a long-lost relative? And what if that long-lost relative was from a different planet in our galaxy? And what if this faraway planet...
It starts with one bite. Then, one hundred. Soon, one thousand. Now a swarm of one million bloodsucking mosquitoes descends on you. Why is your blood their favorite...
The Stone Age started 2.6 million years ago and ran for nearly 2.5 million years. Across that span, our ancestors survived three ice ages, chronic shortages of food, and...
Across the Solar System, there are worlds where volcanoes are far more extreme than anything found on Earth. On Jupiter’s moon Io, enormous volcanic eruptions send...
The Paleozoic Era represents one of the most transformative periods in Earth’s history, spanning approximately 289 million years from 541 to 252 million years ago...
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...
[dx_custom_adunit mobile_id=”RTK_v1lP”] Science. It has saved billions of lives, allowed us to discover new worlds, and helped the world’s...
There are over one million volcanoes on our ocean floor. And all of them suddenly started spewing out red-hot molten rock. The ocean is filling with lava. And nothing...
Our Universe was born billions of years ago. And since that time, it’s given birth to millions of galaxies, our Solar System, and who knows what else. Our Universe...

