What does environmental devastation actually look like?  At TEDxVictoria, photographer Garth Lenz shares shocking photos of the Alberta Tar Sands mining project -- and the beautiful (and vital) ecosystems under threat.

Garth Lenz: The true cost of oil

The true cost of oil

Canada's boreal forest, a critical carbon sink, is under threat from tar sands mining, risking ecosystems and indigenous cultures.

Alberta's tar sands produce some of the dirtiest oil globally, leading to significant environmental and health impacts downstream.

Expanding tar sands operations could transform a vital carbon sink into a 'carbon bomb', exacerbating global warming challenges.