LEGO bricks withstand compression better than concrete. An ordinary plastic LEGO brick is able to support the weight of 375,000 other bricks before it fails.
Hippos can’t swim. Hippos really do have big bones, so big and dense, in fact, that they’re barely buoyant at all. They don’t swim and instead perform a slow-motion gallop on the riverbed or on the sea floor.
Pine trees can tell if it's about to rain. Next time you see a pine cone, take a close look. If it’s closed, that’s because the air is humid, which can indicate rain is on its way.