Environmental activist Erin Brockovich sounds the alarm on the world's water crisis in the documentary "Last Call at the Oasis," by Oscar-winning director Jessica Yu. The film highlights water pollution, depletion and potential wars over vanishing water resources. "You don't have to be a scientist to understand if you take more water out of the bathtub than you put into the bathtub, the bathtub will eventually go empty," marine biologist Tim Barnett says in the film. The ...
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