My Pit Vipers are the only pair of sunglasses I own that can handle all of the above ... So I did what any self-respecting skier in a drought would do—and I went adventuring in the backcountry, on a ...

Pit vipers, along with several of their snake cousins, marry two senses to better locate prey at night: sight and a heat-detecting ability. Deep pits, which lie on each side of the snake's face ...