Humans May Be Able to Sense Oxygen Through Skin
Oxygen sensors akin to those in frogs recently also found in mice, which means we probably also have them.<img src="http://feeds.foxnews.com/~r/foxnews/scitech/~4/272994949" height="1" width="1"/>
http://feeds.foxnews.com/~r/foxnews/scitech/~3/272994949/0,2933,351727,00.html