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The city council passed a 5-cent fee on disposable plastic and paper.
China's government has asked citizens to help clean up the country's waterways.
Companies stopped making some colors after environmental tests found heavy metals.
There's evidence that "decoupling" may be starting.
The Homer City Generating Station burns 16,000 tons of coal per day
It's cost billions of dollars and dozens of lives.
In countries where diesels are popular, the extra ozone pollution could add up.
The pope is likely to preach about climate change and economics when he is in the U.S.
Cities in India have air that's four times deadlier than Beijing's.
Agency is forbidden from taking costs into account when writing rules like one proposed this week that would lower amount of smog-causing ozone allowed in the air.
