What If We Built Cities on the Moon?

If you could, would you live on the Moon? Not as one of the courageous early settlers, but as a citizen of a fully-functioning Moon city. What would they be built out of...

What If a Tornado Hit a Hurricane?

Behind you, a colossal hurricane, moments away from making landfall. In front of you, a towering tornado, fast-tracking its way toward the opposing storm. And you...

What If Mars 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...

What If the Oceans Lose Oxygen?

Isn’t it beautiful? Look at this cutie! Enjoy it while you can. Because if we don’t act right now, in less than 80 years, we won’t be able to...

What If We Nuked the Sun?

Humanity’s nuclear arsenal is capable of destroying all life on Earth. Over. And over. And over. Maybe it’s time we dumped it far away. We might want to inhabit...