USA TODAY US Edition

Our view: U.S. goes the wrong way on greenhouse gases

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For a pollutant that threatens the future of the planet, carbon dioxide does a Madison Avenue-worthy job of image management.

It’s colorless, odorless and tasteless. But it wraps around the globe like a heat-trapping blanket. Last year, more of it was dumped into the air by U.S. energy consumptio­n than in any of the previous eight years, according to research estimates.

If CO2 smelled like rotten eggs and gave the atmosphere a sickening green hue, it’s a safe bet that this gas — which the Supreme Court ruled in 2007 can be regulated by the federal government — would get a lot more attention.

President Donald Trump might actually do something about it. “I’m an environmen­talist. I want crystal-clean water. I want crystal-clean air,” he told a rally last September.

Well, the air is filthy with CO2. Levels of carbon dioxide — which occur naturally when people exhale but unnaturall­y when fossil fuels are burned — were 280 parts per million at the dawn of the industrial age in the late

1800s. Last year, CO2 measured

410 parts per million.

The result has been a warming planet with rising seas, more extreme weather and damaging wildfires. Heat generated by greenhouse gases in the atmosphere is warming the oceans at a much faster rate than previously thought, according to a new study published this week in the journal Science.

Until last year, America had three consecutiv­e years of declining carbon emissions, thanks in large part to regulation­s on vehicle emissions (something Trump seeks to reverse) and power companies turning away from burning coal.

A record number of coal plants closed last year because of cheaper natural gas and the pending Obamaera Clean Power Plan (which Trump seeks to scrap). But a combinatio­n of other factors — including a surging economy, heating demands, more trucking and air travel, and unregulate­d hikes in industrial pollution — caused carbon emissions to rise an estimated 3.4 percent in 2018, according to a Rhodium Group analysis.

That makes it even tougher for the United States to meet its promises under the Paris climate agreement (from which Trump has chosen to withdraw).

Even the internatio­nal goals under that accord will likely not be enough to avoid the worst of climate change, according to a U.N. study and a report by 13 federal agencies released last year.

Where to go from here? We’ve long endorsed putting a price on carbon dioxide by taxing fossil-fuel polluters who use the skies as a free waste dump, and refunding the proceeds to consumers. This market-based approach would make cleaner energy sources more competitiv­e.

Energy taxes are unpopular, particular­ly if the benefits are hard to see. But the costs of inaction are incalculab­le.

 ?? GEORGE PETRAS/USA TODAY ??
GEORGE PETRAS/USA TODAY

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