Polar Extremes

Stark, cold, and seemingly frozen in time, our Earth’s poles feel other-worldly, unchanging, and completely removed from our everyday existence. Yet nothing could be further from the truth. In this two-hour NOVA special, palaeontologist and Sant Director of the Smithsonian National Museum of Natural History, Kirk Johnson takes viewers on a high-energy adventure to the Arctic, Antarctic, and around the globe to uncover the dramatic history of the Earth’s poles and their changing climates.