Why Are Mass Shooters Almost Always Men?

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Why Are Mass Shooters Almost Always Men?         Evolutionary psychology suggests that a threat to status could be a trigger for extremely violent behavior. Read More WATCH VIDEO: Can We Detects Lies? As it turns out, probably not. Deception is a tricky thing. Top 12 Techy Stocking Stuffers         Don't assume the best gifts this year will be waiting under the tree. Read More WATCH VIDEO: GPS Shoe Hotfoots Your Location This GPS sneaker can track your every move. Moon Probe Crash Site Named 'Sally Ride'         The NASA GRAIL probes Ebb and Flow crashed into a lunar mountain, topping a successful mission with a dramatic finale. Read More WATCH VIDEO: Is It Future Yet?: Moonbase Do sci-fi villains have the moonbase market cornered, or will we be living on the moon some day too? Dinosaurs Had Christmas Trees         Conifers haven't spruced up their DNA nearly as much as flowering plants since the two lines diverged from each other 300 million years ago. Read More WATCH VIDEO: The Skinny on Digging for Dinos Few things are as addictive as cutting through dirt hoping to unearth a fossil. 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