OMAHA, Neb. (AP) — Cities around Nebraska will be celebrating Earth Day this month.

The 24th Earth Day Omaha event will be held on April 18 in Omaha’s Elmwood Park. The event features environmental speakers, live music and scores of exhibiters and demonstrations by local green organizations.

To the south in Bellevue, the Sarpy County Earth Day celebration will be held on April 26 and will include a race and green expo with more than 50 exhibitors.

The city of Lincoln will also hold its Earth Day event on April 18.

Earth Day was founded by Wisconsin Sen. Gaylord Nelson in 1970 after he toured the devastation of the 1969 massive oil spill in Santa Barbara, California. On April 22, 1970, demonstrations by an estimated 20 million Americans advocated for a healthy, sustainable environment.