Earth Day is an annual event to demonstrate support for environmental protection.
First celebrated in 1970 and focused on the United States,
it now includes events coordinated globally by the Earth Day Network in more than 193 countries.
Please use this guide to discover some of the Gordon Library's books, journals, and films & videos.
![Full Disk View Showing Earth on 3.14 - 'Pi Day'](<p class="attribution">"<a target="_blank" rel="noopener noreferrer" href="https://www.flickr.com/photos/24662369@N07/8556665115">Full Disk View Showing Earth on 3.14 - 'Pi Day'</a>" by <a target="_blank" rel="noopener noreferrer" href="https://www.flickr.com/photos/24662369@N07">NASA Goddard Photo and Video</a> is licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/2.0/?ref=openverse">CC BY 2.0 <img src="https://mirrors.creativecommons.org/presskit/icons/cc.svg" style="height: 1em; margin-right: 0.125em; display: inline;"></img><img src="https://mirrors.creativecommons.org/presskit/icons/by.svg" style="height: 1em; margin-right: 0.125em; display: inline;"></img></a>. </p>){kind=icon}
"Full Disk View Showing Earth on 3.14 - 'Pi Day'" by NASA Goddard Photo and Video is licensed under CC BY 2.0.