A rare look at the beautiful and desolate Wrangel Island-a Soviet possession 300 miles off the coast of Alaska-as seen through the eyes of Soviet Filmmaker and naturalist Yuri Ledin. Wrangel Island is not only the home to Siberian snow geese, polar foxes and walruses, but serves as the world's largest denning area for polar bears.

Sea shells, crystals, honeycombs, eggs and seeds: They are shaped the way they are for a reason. NOVA takes viewers on a unique journey of discovery to find out why things are shaped the way they are and why they work so well.