No holiday has changed the American landscape like Arbor Day.
On April 10, 1872, Nebraskans celebrated the first Arbor Day by planting more than 1 million trees.
The holiday was proposed by J. Sterling Morton, a Detroit native and pioneer who moved into the Nebraska territory and used his position at Nebraska's first newspaper to advocate for trees.
Arbor Day was celebrated in every state in the union by April 15, 1907, when President Theodore Roosevelt issued an Arbor Day Proclamation to the School Children of the United States, stressing the importance of trees and forestry.
He wrote in part: "A people without children would face a hopeless future; a country without trees is almost as hopeless; forests which are so used that they can not renew themselves will soon vanish, and with them all their benefits."
Roosevelt's words are just as poignant all these years later. These days, National Arbor Day is celebrated on the last Friday in April, and the holiday has been exported around the world.