Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Earth Day & Arbor Day Resources: 2021 Earth Day & Arbor Day

A Citizen Science Month LibGuide

How They Began...

Earth Day image of work surround by circled of dark green leave with blue water, light green land masses and a white copula with red accents representing the Love Library copula. Arbor Day had its beginnings here in Nebraska almost 150 years ago! The pioneers found the territory nearly bare of trees, except for the river valleys. Early photographs show Lincoln as a treeless town. J. Sterling Morton, Nebraska City newspaper editor, advocated for tree planting and the first Arbor Day was celebrated on April 10, 1872. It became a legal state holiday in 1876, designated as April 22nd. In the U.S., National Arbor Day is the last Friday in April, while other dates -- considered the best day locally for tree planting -- are observed in many states. This map shows the date of Arbor Day in each U.S. state. Arbor Day's popularity and observance has grown to be celebrated around the world: Find out when people across the globe celebrate trees

Earth Day is about a century younger, having first been officially celebrated in the U.S. on April 22, 1970. The publication of Rachel Carson's Silent Spring in 1962 is often credited with creating awareness and bringing the environmental movement to the forefront. Earth Day went global in 1990 and continues to grow in worldwide involvement, education and action. The theme for 2021 is Restore Our Earth™.  Check out MOBILIZEU for ways college organizations and students can get involved, make a difference on campus and set an example for the higher education community to follow.  Earth Day 2021

Local Events & Virtual Events


Earth Day Floral: Restore Our Earth

University of Nebraska-Lincoln Libraries
Hours of Operation | Parking Maps | Employment | Support the Libraries
318 Love Library | 13th & R | Lincoln, NE | (402) 472-9568
 @UNLLibraries |  @UNL_Lib |  @unl_lib |