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...
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;...
It’s about to get Old Testament here. What if the creepiest, crawliest, most catastrophic member of the Plagues of Egypt made an unexpected housecall? And decided your...
In the beginning, there was nothing. Well, except for you. And the Big Bang. What would the first moments of the Universe be like? What would happen over the next...
It’s been 30 days since Uranus first appeared in the sky. At first, it looked like our Moon had found itself a stellar partner. But then, we understood something...
A rogue star is headed straight for our Sun. If these two stars slam into each other, it could spell the end of all life on our planet. How could a rogue star end up in...
It’s about to get really hot down on Earth. Because all our oceans suddenly started to boil, sending steam into the atmosphere at an alarming rate. Why would all...
The year is 2040. You hunker down with your fellow human survivors, listening for the sound of your enemy. The cyber-bugs have taken over. How did this happen? What...
Friction is what allows us to move…and to slow down. Friction is how we pick things up …and hold on to them. To be totally honest, there isn’t much we...
The Solar System seems calm, but that tranquility is more fragile than it appears. Now imagine one day looking up and noticing something unfamiliar in the sky. A tiny...
Today on What If, we’re taking Jupiter’s deadly gases and unleashing them on Earth. Where could you be safe from these toxic winds? How would you breathe...
Just four light-years from Earth lies the closest known exoplanet, Proxima Centauri b. It has captured imaginations because it could be one of the first exoplanets where...
Located in the United States, one of the world’s largest volcanoes is gearing up to explode. It’s known as the Yellowstone Volcano, and it’s not just...
Plastic surrounds us in ways most of us don’t even notice. From the toothbrushes we use in the morning to the water bottles in our hands, plastic is everywhere. But have...
So, what exactly is hot ice? Well, it’s simple. It’s made by boiling baking soda, vinegar, and a little bit of water. From that, you get sodium acetate...
The Permian Period, which lasted from about 299 to 252 million years ago, was one of the most fascinating and dangerous times in Earth’s history. It ended with the...
Things are getting hotter and hotter here on Earth, and global warming has everyone panicking. But let us try a wild idea: what if we took every drop of Earth’s water...
How about we rip the United States and Mexico apart from each other, geographically speaking? It would open up new trade routes that would make a ton of money for both...
After 2,250 medical trials, involving 380,000 patient volunteers, your wishes and your prayers have finally been answered: we found a cure for cancer. What if that were...
This is our Universe, an ever-expanding network of stars and galaxies. And this is your brain. Don’t they look eerily similar to one another? Why are they so alike...

