Journey to the top of the world with scientists as they embark on the most ambitious Arctic research expedition of all time. As the ice cap melts, the world warms faster, disrupting weather patterns, diverting ocean currents, and endangering biodiversity. Experts from twenty different nations join the voyage of the 12, 000-ton Polarstern icebreaker as it's gripped by the polar ice and drifts for an entire year to make previously impossible long-term observations and experiments. Follow the scientists in their risky race against time to understand the Arctic before it changes our world forever.

Watch Arctic Drift on NOVA, tonight t 9pm on GBH 2.