Mysteries Of The Tunguska Meteorite In Siberia's Thinning Forests

Siberia's Evenk region is larger than any European country but it is home to only around 17,000 people. It's so vast and remote that scientists have spent decades searching and failing to find one of the largest meteorites ever to fall to Earth -- the Tunguska meteorite. While this region has a relatively small population, the harmful impact of human activity can still be felt here.