When forest fires roared through Siberia this summer, so vast that the
smoke blocked vast Lake Baikal from satellite view, Russian officials
blamed the blazes on arsonists and disorganized fire crews.
Environmentalists say there was another culprit: global warming.
As temperatures rise worldwide, areas such as Siberia are suffering increasingly long dry spells. Russia's national weather agency says the country is the fastest-warming part of the world.