Every spring you begin to hear about Earth Day, which comes around on April 22. You may have fond memories of planting a tree that day, or maybe it just reminds you to be better about recycling.

Earth Day is a global event which aims to highlight the importance of protecting the environment. It takes place every year on 22 April. It was set up in 1970 by Gaylord Nelson, a US senator and ...

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 ...