Mystery Signal: First Detection of Dark Matter?

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Mystery Signal: First Detection of Dark Matter?         Astronomers detect a mysterious signal that they're having a hard time explaining. Read More WATCH VIDEO: A Look at the Top Theories for Terraforming Mars Don't expect a nice new red planet to move to before the next Super Bowl. Earth's Altered Geology: Photos         Humans are permanently changing the deep Earth, from mining to underground nuclear testing. Read More WATCH VIDEO: 5 Islands That Are Going to Disappear These islands may be at risk of going bye-bye within the next 30 years, as sea levels rise. Sharks With Friends: The Most Social Sharks         Sharks have a reputation for being loners, but many are actually very social with each other. Read More WATCH VIDEO: Shark Attack! Tips to Fight Back Learn a few insider tips on what to do in the event of a shark attack. Reading Can Change Your Brain         Scientists measured the short-term effects of reading using fMRI scans, and they found that reading actually changes your brain. Here's what happens. Watch 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 © 2014 Discovery Communications, LLC