Imagine being transported 500 million years into Earth’s past, landing in a world that feels both alien and dangerously unfamiliar. You have just arrived in the Cambrian...
With all the work to do, people to see, traffic jams to get stuck in, we all sometimes wish we could be in two places at once. We’ve already cloned sheep, cows...
A volcano is one of the most unforgiving natural phenomenons on Earth. If you were to fall into its magma-filled center, your body would quickly bubble up, and disappear...
When you think of dinosaurs, images of giant, scaly reptiles like the Tyrannosaurus Rex probably come to mind. Movies, textbooks, and popular culture have shaped our...
Scroll down to watch the video. It’s the largest star that we’ve ever discovered: UY Scuti. And if it were to replace our Sun, it would change a lot more...
Look at the world around you. What do you see? Sometimes a cigar is just a cigar. But mostly, it’s not. Why are we so driven by sex? Has it always been this way...
Legend has it that somewhere beyond Neptune and Pluto, there is a ninth planet, with a mass that is five times greater than Earth’s. Planet Nine, also known by its...
Sharks are the oceans’ primary predators. Eating every fish in their path. But what if you ended up in a pool full of them, and you were the prey? What would...
We visit a lot of planets here on WHAT IF, but K2-141b is the most extreme one yet. Are you ready to jump on board this one-way space shuttle? If you’d rather stay...
In 2021, the U.S. government released a report of alien sightings over the past 20 years. This report featured 144 sightings, mostly witnessed by military aviators. Only...
The immunization battle against COVID-19 continues. This time, your pet’s life is at stake. Any animal’s life, for that matter. And even your life could be...
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...
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...
You’re in the Ghostbusters universe. With a quick stomp, demons are as good as gone. So how would life change if you could bust ghosts in real life? Would you need...
Could World War III really happen before 2030? Old rivalries and power moves are pushing nations to the edge. Let’s break down five conflicts that could ignite the next...
Forget the idea of a flat Earth and imagine instead an Earth shaped like a giant slice of pizza. At first glance, it might seem amusing and even delicious to picture...
You would live in giant glass domes, and grow small portions of food inside. And if you happen to go outside, it would be in your big clunky spacesuit, and you...
The Big One. Those three words make locals along the West Coast of North America shudder with fear. This area is plagued by earthquakes. But hey, at least they are ready...
This shiny metal is constantly in a liquid state. This is mercury. We normally see this metal in tiny quantities. But what would happen if we took thousands of liters...
Sixty five million years ago, a massive asteroid crashed into Earth and ended the age of the dinosaurs. But what if that never happened? What if dinosaurs had continued...
