For Wired, Jane C. Hu writes about an all-female trek to the North Pole. It was a cultural exchange for some, a chance to show women’s capabilities for others. For a physiologist, it’s also a chance to study metabolism under extreme conditions. Most—or maybe all—previous data were collected from men. Put on some warm, woolly socks and read Jane’s account of the women’s adventures. @jane_c_hu and janehu.net.