Did you realize that today is Arbor Day? Gothamist didn't! Luckily, red pointed us to Carbon Based Forms's awesome Arbor Day gift to some trees in Williamsburg: Fifty trees along Bedford Avenue, between North 4th and North 10th Streets, each received a brass vanity necklace with type of tree, thanks to artists Cate Bryant and Gregory Kenney. CBF adds "have a look before they disappear, either through theft or happenstance." You can sponsor a necklaced tree here. And here's the picture that red took earlier of a Zelkova tree.

You can also volunteer with the Parks Department to count trees. And our other tree coverage of the day: Asian longhorned beetles were found in Central Park.