In A Moment in the Sun: Spring in the Arctic, narrator Sir David Attenborough walks us through time-lapse videography showing how the Arctic transforms during the spring and what this means for the Arctic poppy and the hearty, persistent woolly bear caterpillar. This video is excerpted from BBC’s Frozen Planet, a series that shows a fragile world of beauty and hostility, where nature finds a way to survive and thrive in frigid conditions.