You, Too, Can Analyze North Korea's Missile Capabilities--With Physics and Video

Every time North Korea launches a missile, experts pore over photographs and videos to learn more about the country's weapons capabilities. It's a form of kremlinology, one where something so seemingly trivial as Kim Jong-un's coat carries significant meaning. But you don't have to be an analyst at the CIA or the MI6 or any other three-letter agency to do this. Using a video of Tuesday's launch of what experts said is an ICBM capable of reaching Alaska, you can figure out the missile's acceleration. Let me show you how.