#300 How do hummingbirds flap their wings so fast?
How do hummingbirds flap their wings so fast? By having very strong, fast twitch chest muscles, by twisting their wings instead of […]
Category: Animals
#298 How big was the asteroid that killed the dinosaurs?
How big was the asteroid that killed the dinosaurs? It was probably 10 km across, but it could have been anywhere between […]
#297 Why do ant bites hurt?
Why do ant bites hurt? Ants both bite and sting. They drip formic acid onto your skin and some ants inject venom. […]
#281 Why do horses need horseshoes?
I learned this today. Why do horses need horseshoes? They only need horseshoes if they are going to be walking on hard […]
#280 How does fly spray work?
I learned this today. How does fly spray work? By blocking the insect from using its nerves to move its muscles. There […]
#276 Why do mosquitoes come out at night?
I learned this today. Mosquitoes come out at dusk and are active throughout the night because the temperature is lower than during […]
#271 Why do pandas eat bamboo?
I learned this today. Pandas eat bamboo because it is such an abundant food source that they don’t need to fight over […]
#260 How do some animals sleep standing up?
I learned this today. Animals can sleep standing up by locking a set of muscles and tendons in their legs, using gravity […]
#237 How do extremophiles survive?
I learned this today. Different species of extremophiles have evolved different ways to survive the extreme environments that they live in. The […]
#236 Why are tardigrades so tough?
I learned this today. Tardigrades are incredibly strong and incredibly small micro-animals. Tardigrades are generally about 0.5mm long. Some of the big […]