Anita Rani, Ade Adepitan, Ant Anstead and Dan Snow are in New York to reveal the astonishing daily systems that allow America's biggest and busiest city to function day and night.

Deep in Alaska, the primal way lives on. Fight the freeze, brave the wild, hold on to your sanity. And winter is no wonderland when temperatures plummet far below zero. This series follows the drama and hardships experienced by Alaskan households in different corners of this merciless territory as they battle to survive, thrive, and live life on their own terms.