See what environmental problem Robert Redford and Will Ferrell are fighting about

Colorado River Conservation
Video screen capture

This fake celebrity fight is for a good cause.

In this funny video, Robert Redford and Will Ferrell debate the best way to restore the Colorado River Delta. The Colorado River is threatened by persistent droughts and poor water management practices, leading it to be named "The Most Endangered River in America" last year by the nonprofit American Rivers.

Both celebrities are endorsing efforts to raise the river's flow, which often doesn't reach the Gulf of Mexico, and to revive the delta's ecosystem.

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