"CAPE GRIM, Tasmania — On the best days, the wind howling across this rugged promontory has not touched land for thousands of miles, and the arriving air seems as if it should be the cleanest in the world. But on a cliff above the sea, inside a low-slung government building, a bank of sophisticated machines sniffs that air day and night, revealing telltale indicators of the way human activity is altering the planet on a major scale."

"U.S. EPA is giving states an extra year to meet Obama-era ozone regulations."

"Swapping out coal energy for solar would prevent 52,000 premature deaths in the United States every year, according to a new analysis from Michigan Technological University."

"The world's first commercial plant for capturing carbon dioxide directly from the air opens today, refueling a debate about whether the technology can truly play a significant role in removing greenhouse gases already in the atmosphere."

"Pollution from diesel trucks, buses and cars globally is more than 50 percent higher than levels shown in government lab tests, a new study says."

"A federal court delayed its case Thursday regarding a major Environmental Protection Agency (EPA) air pollution rule."

"A federal judge ruled on Wednesday that ExxonMobil Corp should pay a $19.95 million penalty for pollution from its Baytown, Texas, refining and chemical plant complex between 2005 and 2013."

"Three metropolitan areas in Northeast Ohio were among 72 areas in the U.S. that suffered through more than 100 days of unhealthy air pollution in 2015, according to a report released today by the Environment America Research & Policy Center."