**Julie Beer ** has been a writer, editor, and researcher in publishing and radio for more than 20 years. She is a regular contributor to National Geographic Kids books, including the popular Weird but True series, the Ultimate Explorer Field Guide series, and the This or That? series. Beer lives in...

**Julie Beer ** has been a writer, editor, and researcher in publishing and radio for more than 20 years. She is a regular contributor to National Geographic Kids books, including the popular Weird but True series, the Ultimate Explorer Field Guide series, and the This or That? series. Beer lives in the San Francisco Bay Area.