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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 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do? Michael Grill When you think about it, it's honestly kind of weird that hailstones haven't killed all of us already. I mean, they're chunks of ice that plunge from the sky! Hailstones fall from...

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...