What If Planet Nine Exists?

Legend has it that somewhere beyond Neptune and Pluto, there is a ninth planet, with a mass that is five times greater than Earth’s. Planet Nine, also known by its...

What If You Moved an Entire City?

Coastal cities across the globe are planning how they will keep the sea away as it rises. One solution? Just move the city. How much would it cost? How do you lift a...

What If the Universe Is Bouncing?

This is the Universe. And this little dot here is the Earth. And this is a Big Bounce coming up, and it’s about to squash our planet. Yikes. How long would we have...

What If Animals Were As Smart As Us?

What if we weren’t the dominant species on this planet? What if we had to compete with every other species on Earth? We are outnumbered. We are surrounded. And our...