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 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 We Discovered Earth 2.0?

Could there be an even better planet for us than Earth? Scientists are searching for a superhabitable world that wouldn’t just rival Earth, but be a place where life...

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...