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Why Do Leaves Turn Brown in the Fall?
Why Do Leaves Turn Brown in the Fall? The leaves of trees turn brown in autumn when they lose a green substance called chlorophyll.…
Who Invented the Yo-Yo?
Who Invented the Yo-Yo? The yo-yo was first used as a toy in ancient Greece. Pieces of ancient Greek pottery show children playing with…
How Does a Neon Light Work?
How Does a Neon Light Work? Neon lights contain a special kind of gas that glows when you turn on the electricity. The word…
Why Are Piranha Fish so Dangerous?
Why Are Piranha Fish so Dangerous? In South American Rivers swims one of the world’s most dangerous fish - the piranha. There are many…
What Is a School of Fish?
Fish schools are groups of fish that stay together. Each school is made up of one kind, or species, of fish. Some species, like…