#296 Could nuclear fusion power the Earth?
Could nuclear fusion power the Earth? Yes, but not in this half of the 21st century. Nuclear fusion and nuclear fission are […]
#295 When did people start using punctuation?
When did people start using punctuation? The Greeks were the first people to use punctuation, but the Bible made it commonplace. Most […]
#294 Why do we get headaches?
Why do we get headaches? There are many theories, but nobody actually knows. There are 200 different types of headaches, but they […]
#293 How does a rocket engine work?
How does a rocket engine work? Rocket engines work because of Newton’s third law of motion. Newton’s third law of motion states […]
#292 What makes us itch?
What makes us itch? Itching is caused by the release of the chemical histamine. There are different types of itch. Almost all […]
#291 Is irradiated food safe?
Is irradiated food safe? Irradiating food kills off all of the bacteria, gives the food a fresher taste than other preservation methods, […]
#290 Why does UHT milk last so long?
Why does UHT milk last so long? UHT stands for Ultra High Treatment and it is heated at 138℃ for 2 seconds […]
#289 Where did Arabic numerals come from?
Where did Arabic numerals come from? They evolved from a writing system created in India in the 3rd century BC. The […]
#288 Why do women live longer than men?
Why do women live longer than men? There are many reasons, but having two copies of the same sex chromosome and testosterone […]
#287 How do you build a tunnel underwater?
How do you build a tunnel underwater? You can either build the tunnel above ground in pieces and lower it into the […]