Mars Lander May Make NASA Wait

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After Mars Landing, NASA May Have Anxious Wait         Due to a glitch with a primary communications satellite, we may be in for a nail-biting wait to hear from Curiosity after it lands on Aug. 6. Read More WATCH VIDEO: NASA Puts Spacecraft Through Wringer Breaking stuff is the goal of some NASA engineers who make sure the equipment is ready for orbit. Polar Bear Lullabies         Sea ice is disappearing, polar bear dens are declining, and a scientist sings two bears to sleep. Read More WATCH VIDEO: Polar Bear Cubs in Big Trouble As sea ice decreases in coverage, thickness and age, polar bears could have fewer cubs. Inside Look at Security at London Olympics         The 2012 Olympic Games in London are set to be the most security-ridden games ever. How are they preparing? Read More WATCH VIDEO: Advanced T-Rays Peek Inside Objects New t-ray technology may leave little to the imagination when it comes to new security measures. Madonna's Swastika Statement: Origins of the Symbol         Madonna may be sued after displaying the swastika during a concert, but before World War 2, the symbol wasn't so controversial. Read More WATCH VIDEO: The Science of Singing Have you ever wondered why some people can sing and others can't? Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. 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