Evolutionary reasons for winter overeating

What if you could control the camera during a live sports broadcast? Not just choosing a feed, but swooping in for a courtside view or looking down from the rafters? A new streaming tech out of China is making that a reality. It's called "ultimate perspective," and it builds a virtual, 3D model of the game as it happens. The world is watching the innovation that could change how we see sports. / When the weather turns cold, why is it that we want to eat literally anything within our reach (15:04)? On the show: Steve, Yushan & Xingyu