#529 Is a photographic memory real?
Is a photographic memory real? It has never been conclusively proven, but there are some people who come close. Memories are vital […]
#528 Why do insects have an exoskeleton?
Why do insects have an exoskeleton? To stop them drying out, for protection, for support, and to help them sense their surroundings. […]
#527 Why are there 12 signs of the Zodiac?
Why are there 12 signs of the Zodiac? Because the Babylonians decided that there should only be 12. What are the signs […]
#526 Why do eyes get worse with age?
Why do eyes get worse with age? It happens because the lenses of the eye become less flexible and it becomes difficult […]
#525 When did people start using flushing toilets?
When did people start using flushing toilets? It was invented in 1596, but didn’t start to become common until the 1850s. People […]
#524 What causes narcolepsy?
What causes narcolepsy? There are several possible causes. It could be a lack of the chemical hypocretin in the brain, but there […]
#523 How strong is armadillo armor?
How strong is armadillo armor? Extremely strong, but not strong enough to stop a bullet. Armadillos are native to the Americas and […]
#522 Why can’t we fix frostbite?
Why can’t we fix frostbite? If the frostbite is bad enough, the blood supply to the tissue will be cut off and […]
#521 How are foods frozen?
How are foods frozen? They are dipped in something cold, pressed between cold plates, or exposed to cold air. Once vegetables or […]
#520 Is a psychopath’s brain different?
Is a psychopath’s brain different? Yes. There are differences in the areas that deal with empathy and guilt, and the areas that […]