Horizon

Season 3, Episode 8

Episode Title: Chance and Decay / Meteorite Mystery

Air Date: 1966-04-10

Overview:

Europe's heritage of pictures, statues, and buildings is being destroyed at a frightening rate by atmospheric pollution, but an American scientist has just invented a method of preserving limestone. In 1908, a vast explosion shook the Tungus district of Siberia: was it due to the biggest meteorite ever to hit the earth, or something odder?