clothing you are wearing, your body fat percentage, and your activity in the water dictate and plays on that. and of course the initial shock you get from the cold temperatures makes you lose your ability to move your limbs as well, making it a very difficult situation to be in. >> and the big worry is if people are trapped inside. many thanks. well, google launched its public one-day sale of google glass on tuesday, only for buyers in the united states. >> yeah the same day filed patents for wearables that are much smaller, a google glass light contact lens, now it would have a tiny built in camera enabling the wearing to take pictures of what he or she sees.