Watch Wednesday, May 29, 2013 at 9pm | Examine how modern technology and old-fashioned detective work found the suspects responsible for two bomb blasts that went off at 117th Boston Marathon finish line.
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Wednesday, May 29, 2013 at 10pm | Follow investigations that may lead to a breakthrough in predicting earthquakes.
Wednesday, May 29, 2013 at 9pm | In the wake of tornado outbreaks, learn how we can protect ourselves and our communities.
Wednesday, May 22, 2013 at 9pm | Gain a greater understanding of our nearest star — one that might help keep our planet from going dark.
Wednesday, May 15, 2013 at 9pm | Find out what happened when the first modern humans encountered Neanderthals 60,000 years ago.