I missed it - yesterday was Rock Flipping Day. Initiated in 2007, the idea is for people worldwide to go out and turn over a rock. Record what you find below it. Kind of a nice (and simple) way to get in touch with nature.
If you missed it, too, go out today and flip a rock.
(Just remember to flip it back, for that rock, and the space below it, is home to things that perhaps you and I will never see, and we don't want to turn their world upside-down.)