Mystery Underwater Sand Circles: Fishy?

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Mystery Underwater Sand Circles: Fishy?         What is this marine art? Is it a UFO? Is it a crop circle? No, it's supposedly the work of a tiny fish. Read More WATCH VIDEO: Cuttlefish Called the chameleons of the sea, cuttlefish can change their skin color and texture. How to Make an Energy-Efficient Warp Drive         The energy requirement for warping spacetime is (theoretically) decreasing, so when will we really be zooming around space faster than light? Read More WATCH VIDEO: The Science of Prometheus Ridley Scott makes sure his newest sci-fi film looks "technical and not magical." Zoo Panda Cubs Face Tough Beginnings         The baby cub that died over the weekend at the Smithsonian Zoo had fluid in her abdomen and an abnormal liver. Read More WATCH VIDEO: How To Feed 2,000 Zoo Animals From the panda to the butterfly, everybody's got to eat! Castrated Men Outlive Other Guys         The findings could offer clues on how to extend the male lifespan, although there might be tradeoffs. Read More WATCH VIDEO: Spider Sex Dangerous For Some The longer a male Australian redback spider woos the female, the better the chance she won't eat him the first time they mate. From Our Sponsor At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2010 Discovery Communications, LLC