Hailstones

Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water? Daniel Becker No. In fact, it's honestly sort of impressive to find a solution that would actively make the problem worse in so many different ways. Dropping a comet into the ocean to cool the planet, famously suggested by the 2002...

If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time? Reuven Lazarus Today's question is adapted from What If 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions, which contains many more What If answers and is available now! Congratulations to...

My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The...

I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house? Kang JI Bananas are radioactive. But don't worry, it's fine. Bananas are radioactive because they contain potassium, some of which is the radioactive isotope potassium-40. The factoid about banana...