"The natural gas delivered to homes contains low concentrations of several chemicals linked to cancer, a new study found. Researchers also found inconsistent levels of odorants — substances that give natural gas its characteristic “rotten egg” smell — which could increase the risk of small leaks going undetected."

"The air pollution flowing from vehicle exhaust pipes and the breakdown of rubber tires hangs over Toronto-area highways like a mostly invisible cloud."

"Breathing is more dangerous than smoking cigarettes or drinking alcohol."

"Almost 2,000 times more particle pollution is produced by tyre wear than is pumped out of the exhausts of modern cars, tests have shown."

"Meet the Pacific Northwest-built machine that uses live insect antennae to sniff out disasters".

"Climate change and rapid population growth are shrinking the lake, creating a bowl of toxic dust that could poison the air around Salt Lake City."

"Five automakers including Ford Motor Co, Volkswagen AG and Honda Motor Co on Tuesday backed efforts by President Joe Biden's administration to restore California's ability to set its own strict tailpipe and zero-emission vehicle standards."