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Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. The answer is all about perspective. Humans are ...

There are three things that I remember from my high-school Earth-science class: the swirling pink cover of the study book designed to help us pass New York State’s year-end test, the football player ...

An illustration shows how, about 65 million years ago, a large asteroid collided with Earth. It hit what is today Mexico and created the Chicxulub crater. Mark Garlick/Science Photo Library/Getty ...