On this date , state and U.S. Senator, governor, and founder of Earth Day, was born in Clear Lake. He ran for the State Senate in 1948 and served ten years before being elected Governor in 1958. In 1962, Nelson was elected to the U.S. Senate. As a strong proponent of environmental protection Nelson proposed an in a speech given before the 91st Congress. The first celebration was held April 22, 1970.