A view of the Los Angeles city skyline as heavy smog shrouds the city in California on May 31, 2015. AFP PHOTO/ MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
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What is in our air
01:15 - Source: CNN
Our environment 16 videos
A view of the Los Angeles city skyline as heavy smog shrouds the city in California on May 31, 2015. AFP PHOTO/ MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
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What is in our air
01:15
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Great barrier reef 1
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New plan to protect the Great Barrier Reef
01:01
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Plastic USE
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Are you eating plastic?
01:30
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microbeads
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8 trillion microbeads pollute U.S. waterways daily
01:14
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World's first plastic-free supermarket aisle debuts
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The environmental cost of one day on Earth
01:22
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Should I drink bottled water?
01:32
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SANTA CRUZ PROVINCE, ARGENTINA - NOVEMBER 27: Ice calves at the Perito Moreno glacier in Los Glaciares National Park, part of the Southern Patagonian Ice Field, the third largest ice field in the world, on November 27, 2015 in Santa Cruz Province, Argentina. The majority of the almost 50 large glaciers in Los Glacieres National Park have been retreating during the past fifty years due to warming temperatures, according to the European Space Agency (ESA). The United States Geological Survey (USGS) reports that over 68 percent of the world's freshwater supplies are locked in ice caps and glaciers. The United Nations climate change conference begins November 30 in Paris. (Photo by Mario Tama/Getty Images)
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Facts first: Climate change is real
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Global warming brings on more pollen
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UK introduces plan to minimize plastic waste
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Teen Earth Day Hero talks plastic pollution
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How will EPA cuts affect your neighborhood?
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Teen leads effort to save environment
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Earth Day highlights fragile environment
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America's aging pipelines