Knowledge

Where did Aspirin come from? Why does caffeine keep me awake? How is chewing gum made? Why do people snore? How did Christmas cards come to be? What is amnesia? Why have we got a memory and how does it work? Why do we laugh? How did the idea for Santa Claus originate? Why do migrating birds bother to fly back north? How does a thermometer tell the temperature? What is dry ice? What are sunspots? Why do some animals hibernate in the winter? Why do we dream? What are germs? Why do we yawn? What makes people dizzy when they spin? Why does hair turn gray? How does a helium balloon float? Why do bananas get bruised as they age? How do lizards communicate? How do we smell? What are teeth made of? Why do we have eyebrows?

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