This week we have a nature mystery to solve! Does anyone know what caused the squiggles on the underside of the pebble? If so, please share your knowledge with us! And if you haven't had a chance to visit the TMG flickr pool recently, head over there right now. You will see some very cute bunnies, a tadpole in transition, a desert boy, beavers hard at work, and lots of other cool things.