In the frozen heart of Siberia lies Yakutsk, the world’s coldest inhabited city, where temperatures drop to a bone-chilling −84°F (−64°C). But how do people survive — and even thrive — in such extreme conditions? From daily life to the science of human adaptation, this video uncovers the shocking realities of living in Earth's most unforgiving climate. Discover how the cold transforms the human body, behavior, and way of life in ways you never imagined.