Earth Day has been celebrated across the country for more than 50 years now, and the annual celebration is once again around ...

Earth Day is April 22. Here's what to know about how Earth Day happened and how to celebrate our planet this April.

Pollution in several major cities, including Paris and New Delhi, is about 50 percent lower… We mark this 50th anniversary of Earth Day with Jane Goodall, one of the world’s most renowned ...

Nope, that distinction falls to Julian Koenig, an advertising writer whose first choice wasn't even "Earth Day." How about this one: Did you know that Earth Day has its own theme song? If you can ...

Earth Day is on Tuesday, April 22 ... They would be the inner core, the outer core, mantle and crust. What about this one: What percentage of the Earth’s surface is covered in water?

Learn about Earth Day founder Gaylord Nelson (1916–2005) and how environmental disasters of his day inspired the creation of Earth Day in 1970. On December 7, 1972, Apollo 17 astronauts captured a now ...