Does the human body contain gold? Can eating spinach really make you stronger? Quench your curiosity with the fascinating facts behind every-day mysteries. Why do you get bad breath? What's Morse Code? How do they make paper out of trees? Why are sloths so slow? Why do they say hyenas laugh? Why do koalas spend practically all their time sleeping? Why doesn't it hurt to get your hair cut? Why do they call the lion the king of animals? Why do we get dizzy? How do our bodies repair cuts? Why do we only get chickenpox once? Does quicksand really exist?