I've heard the old saying that "1/3 of your body heat is lost though your head", it's often cited as a reason to wear a hat on a cold day in the mountains. Is this actually true? Are their any ...
In the near future I will have to prepare myself for a Siberia expedition. During the winter, average temperatures in Siberia range from -10°F (-23°C) to below -50°C (-45°F).1 What should I ...