Next time you feel a little chilly or complain because your hands are cold, think about frigid Siberian winters. Or how it might feel to be in Vostok, Antarctica, where the lowest temperature on Earth was recorded in 1983 (a bone-chilling -89.2°C/-128.6°F). Yet, cloaked in snow and dripping with gleaming icicles, these wintry scenes can be as beautiful as they are brutal. Are you wrapped up warm? Then we’ll begin.