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      Earth

      What If Earth Had 10 Years Left?

      October 1, 2021
      Earth

      What If the Earth Was Spinning on Its Side?

      May 9, 2022
      Earth

      What If You Fell Into the Deepest Hole on Earth?

      December 12, 2019
      Humanity

      Why 99% of Humanity Is Lost to Time

      October 20, 2023
      Cosmos

      What If Halley’s Comet Crashed Into the Moon?

      June 9, 2020
      Science

      What If We Trashed Earth’s Orbit With Space Junk?

      With every rocket we launch into the Earth’s orbit, we’re trapping ourselves on our own planet. Wait, how could sending rockets into space put an end to...

      Humanity

      What If One Million People Actually Stormed Area 51?

      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...

      Humanity

      What If You Were the Last Human on Earth?

      For whatever reason, you are the last human on Earth. So what do you do? Eat like a king? Move into Buckingham Palace? Drive fast? Blow things up? Be naked all the time...

      MSN New, Earth

      What If We Nuked the Mariana Trench?

      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...

      MSN New, Cosmos

      What Would Happen If You Detonated a Nuclear Bomb on Mars?

      Life on Mars would be nothing like life on Earth. The first settlers would probably spend most of their time inside sealed habitats protected from radiation and the...

      Earth

      What if Earth Had Rings Like Saturn?

      If Earth had rings like Saturn our sunsets would be an incredible spectacle. It isn't farfetched as the Earth did have rings a very long time ago, the result of a...

      Earth, MSN New

      6 Terrifying Prehistoric Monsters You Didn’t Know Existed

      Dinosaurs often steal the spotlight when it comes to terrifying prehistoric creatures, but they were far from the only fearsome beasts to roam the Earth. From enormous...

      MSN New, Cosmos

      Left in Space: 12 of the Strangest Things Humans Left in Space

      During the Apollo missions in the 1960s, astronauts collected lunar rocks to bring back to Earth, but to lighten their cargo, they left 96 bags of urine and feces on the...

      HTS MSN

      Exotic Animal Owner Nearly Kills a Community: The Zanesville Massacre

      In the fall of 2011, the quiet town of Zanesville, Ohio, was thrown into chaos by an event so extreme it stunned the entire United States. What began as an ordinary...

      MSN New

      How Would Mars Change If It Had Rings Like Saturn?

      Scientists theorize that many millions of years ago, Mars had rings, just like Saturn. And it looks like the red planet could be due for a new set of rings in the future...

      MSN New, Earth

      How Bad Would It Get If a Hypercane Formed in the Atlantic Tomorrow?

      A massive asteroid just hit Earth, right in the middle of the Atlantic Ocean. Thanks to NASA’s new infrared telescope, we were able to detect it and prepare for the...

      HTS MSN

      Why You Wouldn’t Survive El Chapo’s Prison Cell

      Imagine spending years without seeing the sky or hearing another human voice. Your world is reduced to four concrete walls, a steel door, and silence so intense it...

      HTS MSN

      How Dangerous Is an Ostrich and How Can You Survive It?

      These big goofy looking birds can be pretty unpredictable, dangerous, and even vicious. You certainly don’t want to provoke one. Can an ostrich’s kick kill...

      MSN New

      What If a 40 Foot Wingspan Predator Appeared in Modern Cities?

      Imagine walking out of your office during lunch and suddenly noticing people staring at the sky. A massive shadow passes overhead. At first, you think it is a small...

      MSN New

      What Our Planet Would Become If the Moon Disappeared Overnight?

      Imagine waking up one night and realizing the Moon is simply gone. No warning, no impact, no trace. Just an empty sky where Earth’s closest companion used to be. At...

      MSN New

      What If Aliens Are Actually Humans From the Future?

      What if you found out that you had a long-lost relative? And what if that long-lost relative was from a different planet in our galaxy? And what if this faraway planet...

      MSN New

      Why Humans Will Never Set Foot on Saturn

      If a human could somehow approach Saturn, the experience would be unlike anything in our Solar System. From a distance, the planet looks calm and elegant, wrapped in its...

      Humanity, MSN New, Technology

      What If NASA Had the U.S. Military’s Budget?

      They sent humans to walk on the Moon, flew by every single planet in our Solar System, delivered the first residents to the International Space Station… What else could...

      MSN New

      The Hidden Danger of Killing Every Mosquito

      It is easy to dismiss mosquitoes as nothing more than annoying insects, but their impact on life on Earth is far more serious than most people realize. These tiny...

      Earth

      What If a Gravitational Wave Hit Earth?

      1.3 billion years ago, two orbiting massive black holes, circling each other at 250 times a second, collided in a violent, universe-rippling explosion that sent waves of...

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      Popular What Ifs

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      What If You Spent a Month on Snake Island?

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      MSN New, Humanity

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      What If is presented by Underknown, a production company creating a variety of short-doc series that search for the underlying truth of how our world operates and how it came to be. Our shows take you to the frontiers of science and make the most complex ideas and theories entertaining and accessible.

      Popular What Ifs

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