Earth Day
地球日

Earth Day was started in 1970. It was organized to help raise 
environmental awareness to the general public.It helped spark the creation of the Environmental Protection Agency. 

By the year 2000 there will be6.3 billion people on the planet. There was almost twice as much land devoted to urban life in 1990 than there was in 1970.

The Earth Day provides a special day to remind the population to take care of the Earth.