Climate change. Pollution. Species loss. Deforestation. Earth is a planet under threat. It's also our shared and only home. To find solutions to some of today's urgent environmental problems, we need to bring them into sharper focus.
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10 of 10 SHOW RUNTIME1:48To celebrate Earth Hour 2013, Earth Touch is switching off the lights on March 23 and letting in the sounds of nature. Which animal species can you hear?
