In a controversial new study, scientists are claiming that trees in Los Angeles are contributing to the city's air pollution, challenging conventional notions about the positive role they play in ...

Tehipite is nestled right up against the two highways, leaving the more than 500 students and employees vulnerable to vehicle pollution, which has been known to cause health problems, including ...

Without the health risks of air pollution, fresh air feels great for our lungs ... Lichens look like spots or clumps of colour, like someone has splashed paint onto a branch of a tree. Their colours ...

Ozone also damages Colorado’s parks and natural areas, including aspen trees. The court made its decision over the objections of the EPA, Colorado and the American Petroleum Institute. Today’s ruling ...

Donald James Sutton, the owner of Elhannon Wholesale Nursery, talks about pollution at one of the plots of land where he grows trees along Route 22 on Thursday in Hoosick Falls. A plot of land ...