Boston Bombings 'Not the Work of an Amateur'

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Boston Bombings 'Not the Work of an Amateur'         The fact that the bombs were close by and went off within moments of each other suggest a sophisticated attack. Read More WATCH VIDEO: DNA Survives Bomb Blast See how bomb builders are traced through the DNA left on their bombs. When Terrorism Targets Sports: Photos         As horrifying at the attack at the Boston Marathon was, sadly this isn't the first time extremists have stained a major sporting event. Read More WATCH VIDEO: 9/11 Remembered In Language No longer just a date, the phrase "9/11" is now part of our national lexicon. Mayan Calendar End Date Confirmed         Dating of an elaborately carved wooden beam from a temple in an ancient Maya city confirms the calendar ended last December. Read More WATCH VIDEO: Mayans Never Predicted Doomsday The Mayan doomsday myth is debunked by ... the Mayans themselves. Mars-Comet Impact Less Likely         For those of you who wanted to see some planetary action, this news will be a bummer. Read More WATCH VIDEO: The Cost of Living on Mars We break down all the variables to make a successful move. 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 © 2013 Discovery Communications, LLC