The megalodon, the big boss of our ancient oceans, the king of all sharks, killer of whales. If you’re a fan, you’ve already witnessed our megalodon vs. mosasaur episode...
In the past few billion years, Earth has been pummeled by asteroids, crashed into other planets and frozen over several times. Not to mention being ruled by all kinds of...
What if everyone on the planet coordinated to perform the biggest “flush mob” in history? Pushing all the wastewater in the world down the drain, all at once...
For billions of years, the Sun’s gravitational has kept Earth’s orbit on a steady and reliable path. But this rogue star has other plans for our planet. This...
Look out. A burning hot space rock just fell straight into your living room, destroying all the things you care about most. Goodbye, sweet television. How did this...
When I started this YouTube channel, I became fixated on the day it would succeed. I stopped going out with friends and spent every waking moment working toward, and...
The Amazon rainforest stretches for millions of kilometers, hiding ancient tribes, animals and maybe something else. What if under this mysterious canopy lies an...
What would happen if you took the most energetic light source in the Universe and smashed it into a massive gravitational monster? Well, you might reverse the flow of...
Imagine, it comes out of nowhere. A blinding flash, spanning the entire globe. It lasts only a few seconds, but when it’s over, everyone’s memories have been...
Millions of years ago, this giant sea scorpion terrorized the ocean. It was the apex predator of its time. So what if we brought it into the modern-day and had it fight...
“Sleep is good. Death is better. Yet surely, never to have been born is best.” These lines close a 17th-century poem by German writer Heinrich Heine. The...
There’s a giant, peanut-shaped object orbiting the Sun, and it’s name is Halley’s comet. Like all comets, it’s a cosmic mashup of frozen ice, gases, and dust...
Imagine if Earth suddenly lost an entire continent. North America wouldn’t just vanish off the face of the planet, of course. Instead, it would sink into the...
410 kilometers (254 miles) above the Earth. That’s where the International Space Station floats. What if you happened to be all the way up here but suddenly fell...
The Big Rip, the ultimate fate of our Universe. It will be a cosmic event that will tear apart galaxies, one by one. Stars, planets, you, everything will be eviscerated...
This rogue star has been traveling the Universe. And now, it’s finally entering our Solar System. But this isn’t just any regular star. It’s known as a...
Today we’re dropping a big bomb into the deepest part of the ocean. So grab a surfboard and get ready to hang ten on the waves of a massive nuclear tsunami. How would...
How would you feel if this never ended? Despite all of the masks, tests, and vaccinations, there is no guarantee that COVID-19 will ever disappear. But stick with me on...
What if humans had gills and could breathe underwater just like fish?
[dx_custom_adunit mobile_id=”RTK_v1lP”] Twin siblings, twin peaks, twin cities, twin planets… Two earths, one solar system. How would that work? Where...