A new study shows ozone levels in National Parks are similar to the levels in the largest U.S. cities. But most of this ozone may originate outside of the parks.
By Daniel Ackerman, Scientific American
The measure delays by eight more years the implementation of 2015 air pollution standards issued by the Environmental Protection Agency under Obama.
By Michael Biesecker, Associated Press
The end of ice on Earth is merely one thing we won’t be able to monitor if NASA stops using satellites to look at our home, author David Biello writes…
By David Biello
In our news wrap Thursday, Taliban attackers killed 37 people and wounded 40 in a double suicide bombing in Afghanistan. The first bomber attacked buses carrying police trainees, followed by a second bomber who blew himself up when people rushed…
By PBS NewsHour
By Matthew Daly, Associated Press
The Obama administration has set a new national ozone standard, tightening limits on the smog-forming pollution linked to asthma and respiratory illness.
By Associated Press
A federal appeals court says the Environmental Protection Agency complied with the law in deciding which areas of the country failed to meet federal limits on smog-forming pollution.
By Jenny Marder
For 59 minutes early Wednesday morning, the moon will turn an eerie shade of copper red when it passes through the Earth’s shadow in a total lunar eclipse. And if the skies are clear enough and you look at…
By PBS NewsHour
Just one week after the Bush administration announced its first new ozone standards in more than a decade, chemists have discovered that a chemical reaction in the atmosphere once thought to be insignificant may be a major contributor to smog.
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