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The short explanation of this alert was:

Ozone, a chemical that occurs naturally in the upper atmosphere, helps protect us from the sun's radiation. But, when it's released close to Earth's surface through human activity, ozone is dangerous and can cause numerous adverse health effects such as asthma and lung damage. The Clean Air Act requires the Environmental Protection Agency (EPA) to control pollution from ozone based solely on the best available science. Yet the EPA has announced a draft ozone pollution standard that falls short of what the agency's own scientists and science advisors consider safe.

The EPA is currently accepting comments on its proposal. Urge the EPA to use the best available science to set a stronger final ozone standard that protects our health.

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