Mathieu Young photographed a very interesting series on a cannabis farm. He discusses the lighting he used, and why he feels his photos were picked up by Rolling Stone magazine.
Strobist writes:
In the example above, photojournalist Mathieu Young's lighting is dictated by a need to both add texture to the scene and to protect the anonimity of the worker. Rather than a pre-conception, the lighting style is the last in a conscious series of steps and decisions.