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Natural Resources Defense Council

Reese Witherspoon is the voice behind a powerful new PSA combating climate change.

She narrates the minute-long video seen below, which was produced by environmental group Conservation International and aired at the Momentum for Change Awards on Dec. 10, 2015, during the UN climate talks in Paris.

Her role as our "home" — as in, the world we all share — is making waves online.

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