Gray Matter: In Which I Fully Submerge My Hand in Liquid Nitrogen

"A layer of bubbles protects the flesh from liquid nitrogen, though only for a split second. Need proof? Watch the video."

"When I first saw this photograph of a man's hand submerged in liquid nitrogen at somewhere below -320° F, my immediate thought was, "That guy must be crazy! One second in that stuff, and you're shopping for new skin!" My shock was tempered only slightly by the fact that it was my hand, and we'd taken the picture just a minute earlier."

"I hadn't realized that my hand was q...