Thule snow goggles: 1,000-year-old Arctic eyewear carved from walrus tusks
These goggles, crafted by the Thule people who lived in Alaska and northern Canada around 800 to 1600, are a very early ...
Tekiela: The humble feather helps birds meet winter’s challenges
Winter poses several challenges for birds. Scarce food supplies and limited water are obvious challenges for nearly all of them. Extremely cold temperatures, strong winds, driving snow and ...