Comet Ice

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...

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...