Barchan Dunes are simply well-ordered piles of sand with a characteristic horseshoe-like shape, which can migrate across vast distances and coalesce into flowing ridges. Here are two examples of these dunes - one from southern Mars and one from southern Earth. Can you guess which picture is from where?
Impressive videoography of an impressive critter. The first video shows a jumping spider cleaning its feet, fangs, and eyes. The second video shows a jumping spider mating dance. The third is a National Geographic clip of a jumping spider catching a honey bee. Enjoy!
The Smooth Newt (Teichmolch) can be found in almost any small backyard pond or along the shallow water shores of lakes throughout Europe. I found this dandy of a specimen in the small pond in my wife's parents' backyard in Nordheim-Westfalen, Germany. I first noticed him while he was enticing one of the many female newts in the pond by floating in front of her and vibrating his neon-blue and -orange tail. After about two minutes, she had enough and darted away. At this point I caught him with a net and placed him in a glass container for a few portrait shots. I grabbed one of the females and stuck her in the jar too.