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Planet Earth is at a crisis point. Researchers say we have to begin reducing carbon dioxide emissions by 2020 if we want to meet the temperature goals outlined in the Paris agreement and avoid catastrophic climate change.

The work to be done can seem overwhelming. A survey published this week found that only 6 percent of Americans think we will succeed in reducing global warming.

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Scientist Norman Kuring created this image of Earth's eastern hemisphere by combining data from six separate orbits made by the satellite Suomi NPP on Jan. 23, 2012. NASA / NOAA

By Erik Hoffner

Denis Hayes was the principal national organizer of the first Earth Day in 1970, and he took the event to the international stage in 1990. He is board chair of the international Earth Day Network, and president of the Bullitt Foundation.

Earth Day 2018 is slated for April 22 and focuses on plastic pollution, so Mongabay took the opportunity to ask him about this year's event and find out what else is on the mind of this key leader of the international environmental movement.

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EcoWatch Daily Newsletter

The Earth Day Network has announced that this year's Earth Day, on Sunday, April 22, will focus on ending plastic pollution by Earth Day 2020, the 50th anniversary of the world's first Earth Day in 1970, which led to the creation of the U.S. Environmental Protection Agency (EPA) and the passage of the Clean Water, Clean Air and Endangered Species Acts.

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