Reuters: Wildfires crackled across Siberia this summer, turning skies ochre and sending up enough smoke from burning pines to blot out satellite views of the 400-mile-long Lake Baikal.
To many climate scientists, the worsening fires are a consequence of Siberia getting hotter, the carbon unleashed from its burning forests and tundra only adding to man-made fossil fuel emissions. Siberia's wildfire season has lengthened in recent years and the 2015 blazes were among the biggest yet, caking the lake, the...