Discovery News Daily: 9/11 Imprint Persists in Americans' Brains

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9/11 Imprint Persists in Americans' Brains Nine years after the attacks of 9/11, the psyches of Americans show permanent changes.  Read More WATCH VIDEO: Why Tell Me Why?! Why do we have deep-rooted fears? Find out here. Human-Like Brain Found in Worm For the first time, a structure comparable to our cerebral cortex has been found in an invertebrate.  Read More WATCH VIDEO: Weird Worms Eat Bones Undersea worms eat the bones of whales and other large, dead animals. Ancient Nubians Drank Antibiotic-Laced Beer A group of people who lived nearly 2,000 years ago in Sudanese Nubia took doses of tetracycline -- through their beer. Read More WATCH VIDEO: Cool Jobs Explore the globetrotting life of an archaeologist. Tether Maneuvers Spacecraft Without Fuel A NASA team wants to demonstrate a tether that can be used to move satellites and spaceships without fuel. Read More WATCH VIDEO: Yachts in Space? Maybe, if NASA's plans to use photons to power a small satellite prove successful. At Discovery we value the 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