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 ...

At ESF, we believe that the Earth’s celebration is worthy of an entire week, not just a day! Starting Monday 4/22, ESF is celebrating its annual Earth Week with a full slate of exciting events to ...

April 22 is Earth Day, a day to not only celebrate our love of the natural world but to acknowledge our duty to take care of and protect it. A great way to spread awareness about the day itself ...

This is the third Mother Earth Day celebrated within the UN Decade on Ecosystem Restoration. Ecosystems support all life on Earth. The healthier our ecosystems are, the healthier the planet - and ...