What if we are not alone? There are so many secrets that making contact with alien life could reveal. The only problem is, we have no way of getting in touch with them...
Since the beginning of the year, more than 70 earthquakes measuring magnitude 6.0 or greater have rattled regions along the Pacific Ring of Fire. Some have been...
If you were to drill straight down into Mars, what would you find? Would the red planet reveal its true colors? Would you finally discover life on Mars? And how...
For more than four decades, scientists believed it was gone forever. No sightings. No evidence. No surviving populations. An entire species appeared to have vanished...
The Amazon rainforest stretches for millions of kilometers, hiding ancient tribes, animals and maybe something else. What if under this mysterious canopy lies an...
Imagine a future where the unthinkable happens. A global catastrophe wipes out nearly everyone on Earth, leaving only two human beings alive. With the survival of the...
Imagine Earth covered in thick sheets of ice. And sea levels so low you could walk to a different continent. This is what our planet would look like during an ice age...
A black hole is on a collision course with our Sun. And there’s nothing left for you to do except sit back and watch the destruction of our entire Solar System. How...
The Japanese manga series “Attack On Titan” has captivated our imaginations and greatest fears. For those of you who are new to the show, well, it involves...
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...
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;...
The Sun is the engine of life on Earth. It provides heat, light, and the energy that drives every ecosystem on the planet. Without it, our world would instantly become...
Today on What If, we’re going to build the highest bridge on planet Earth. Welcome to the Qinghai-Tibet Plateau, the “Roof of the World.”It’s home to the world’s...
This not-so-little piece of equipment could change astronomy forever. And it could be about to find alien life. Maybe in a matter of days. What is this powerful new tool...
The Moon’s surface is covered in ancient scars, from asteroid impacts to long extinct volcanic activity. From a distance it looks quiet and empty, but beneath that dusty...
Unlike Earth, which is securely orbiting the Sun, there are billions of rogue planets drifting through the Milky Way with no star to call home. These worlds were likely...
The Paleozoic era began 530 million years ago when the Earth woke up from an ice age. This era lasted for 289 million years, but you might not even last five minutes in...
Would you ever venture into the ocean if you knew this creature could be lurking beneath you? It’s twice the size of a T. rex, its jaws are big enough to crush...
What makes the perfect human? Immaculate features? Indomitable Intelligence? Incomparable wit? Or irresistible charm? What if you could modify your genes? What if...
They’re fast. They’re ruthless. And they’re hungry. Their sharp teeth can destroy you in seconds. And no, playing dead will not fool them. It’s...
