President Obama soon will decide whether to approve the Keystone XL pipeline to bring the Tar Sands crude oil from the mines pictured here from Alberta to the Texas Gulf refineries. Garth Lenz/Courtesy photo
The pristine arboreal region is threatened by existing and proposed Tar Sands mines in Alberta, Canada. Garth Lenz/Courtesy photo
Garth Lenz, a fellow of the International League of Conservation Photographers, took many of his photos of the Tar Sands mines from the air. He will present his photos and discuss the environmental impacts in two talks this month in Davis and one in Sacramento. Courtesy photo

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