This has been a big week – Earth Day and Arbor Day all at once.
The first Arbor Day was held in Spain in 1805. Today, it is celebrated all over the world, but on different dates, as is Earth Day. I guess the easiest thing to do is plant a tree, but (just to put in my 2 cents) plant one that’s native to your area, so it has a chance to survive! Read more about both occasions at my website.