Two questions. I have read that wind chill is a measurement (or calculation, more accurately) that describes how cold the wind feels, even though the wind isn't actually colder than still air. What I am wondering is why isn't the wind actually colder? If it is moving faster it is lower pressure than the surrounding air, and thus according to the ideal gas law also lower temperature, right? Secondly I have read on a few different sources that you can get frostbite above freezing temperatures if there is a strong wind chill. How can that be? Doesn't frostbite only happen when the skin or blood vessels freeze? I did not think it was possible for heat to flow from lower temperature body to higher temperature body.