#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 […]
#275 How does radiation sickness happen?
I learned this today. High energy radiation or long exposure to radiation can damage the DNA in cells and cause radiation sickness. […]
#274 How is scaffolding attached to a building?
I learned this today. Scaffolding is attached to the building by placing ties through windows, by drilling holes in the brick, or […]
#273 How were the Nazca Lines made?
I learned this today. The Nazca lines were made using wooden stakes and ropes to make them straight. Then the top layer […]
#272 Why did the Iron Age start?
I learned this today. The Iron Age started because iron and steel reached the point where it was stronger than bronze, and […]
#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 […]
#270 What was the Tunguska event?
I learned this today. The Tunguska event was probably a meteor air burst that exploded over Eastern Siberia on June 30th, 1908. […]
#269 When were the first lawyers?
I learned this today. The first lawyers appeared in the Roman Empire in the time of Emperor Claudius who ruled from AD […]
#268 What are vitamins?
I learned this today. Vitamins are organic compounds that our bodies cannot produce on their own but that we need to live. […]
#267 Why did Rome become a republic?
I learned this today. Rome became a republic because the last king of the Roman Kingdom was overthrown. The Kingdom of Rome […]