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Matt Damon uses toilet water in Ice Bucket Challenge video
Matt Damon is a known environmentalist, so when he received the ALS ice bucket challenge from Ben Affleck, he took some time to consider how best to address the situation.
California is suffering from a massive drought, and much of the world has no access to clean water, he explains in the YouTube video posted by Water.org, the non-profit he founded.
Check out what Damon came up with as an appropriate response to pal Affleck's challenge.