Let's protect the oceans like national parks | David Lang

You don't have to be a scientist to help protect the world's oceans, says underwater drone expert and TED Fellow David Lang -- in fact, ordinary citizens have pulled together to save the planet's natural treasures many times in history. Lang asks us to take a lesson from the story of the US National Parks Service, offering a three-point plan for conserving underwater wonders. Check out more TED Talks: http://www.ted.com

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