Watch one during your next break.

Add Yahoo as a preferred source to see more of our stories on Google. The best TED Talk's nudge you out of your comfort zone, flip the lights on in shadowy corners of your understanding, and leave you ...

2nd Lt. J.D. Vela Cruz, a laser weapons and aerodynamics engineer from the Air Force Research Laboratory’s Directed Energy Directorate, explains how directed energy amplifies speed, range, precision ...