What if we took everything that sustains life on this planet, and shrunk it down to one small bubble? Earth’s biosphere stretches about 20 km (12 mi). From the...
About 50 billion rogue planets are roaming the Milky Way with no host star to hold on to, some of them three times bigger than the Earth. They don’t give off any...
Something strange is happening on the outskirts of our Solar System. It could be a large, mysterious planet. Or, it could be a black hole. How big would this black hole...
Since the dawn of human curiosity, the Moon has been a constant fixture overhead, quietly pulling at the tides, marking the passage of time, and shaping conditions on...
Welcome to the longest staring contest of your life. You’re about to go seven days without blinking. What device would keep your eyes forced open? How long would it take...
Imagine looking up at the night sky and learning that a black hole is racing toward Earth at nearly the speed of light. Not a giant one that swallows galaxies, but a...
Imagine a world where humanity has not only gained the ability to travel and to populate space but has progressed even further than that. Humanity can now control and...
Deep in the north lies Beachy Island, one of the most important historical locations in the Arctic. Practically uninhabitable, the remote island has nevertheless become...
If you happened to wander into the Nevada desert and stumbled upon the secret U.S. military base, Area 51, you’d quickly be arrested, killed, or maybe even...
Imagine the possibilities that would come with living forever! You could spend more time with loved ones, master a variety of careers, and travel the entire world! If...
Forget a doomsday asteroid or melting permafrost. It’s the freezing of Earth’s core that will end the world in today’s episode. Or would it? Because maybe, just...
Mars didn’t always look like this. It may have once been covered in oceans. But what if we brought all the Martian water back and transformed the red planet into...
Falling into a river in the Amazon is one of those survival situations no one wants to imagine. The water is dark, movement is disorienting, and panic can set in quickly...
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...
Imagine standing in the middle of the Sahara Desert, surrounded by a blinding expanse of endless, sun-baked sand dunes. Now, imagine watching those barren dunes ripple...
Take a slow, deep breath right now and notice how satisfying that simple act feels. What fills your lungs in that moment is oxygen, making up only about 21 percent of...
Climate change is one of the biggest challenges facing humanity. Rising temperatures are melting ice, intensifying storms, damaging ecosystems, and threatening...
Charla Nash had been to that house in Stamford many times. She and Sandra Herold were close friends, and she knew Travis, the 14 year old chimpanzee Herold kept as part...
Imagine shrinking Earth to the size of a small ball to reveal just how vast the Universe is. If it were 12 centimeters wide, Jupiter would stretch over a meter across...
Mars has long captured the imagination as humanity’s potential next home. The red planet looks inviting from a distance, but the reality is far from hospitable. Even a...
