for the second part of his Earth Day quiz. And no matter how you grade on the quiz -- we’re not keeping score -- it’s time to collect your reward with free posters of our favorite life-filled ...

Learn about Earth Day founder Gaylord Nelson (1916–2005 ... What inspires you? Take a look at posters, buttons, stamps, and other environmental objects from our collections. Smithsonian researchers ...

The 21st Annual Pahrump Earth/Arbor Day Celebration’s theme is “Our Power, Our Planet.” The event is set for Saturday, April ...

World Earth Day is a celebration that takes place every year on the 22nd of April. The first World Earth day began in 1970. On this day, many people raise awareness of environmental issues and ...