Luckily, air purifiers are getting smarter and smarter at filtering out all the gunk that makes throats close up and eyes ...

During a hike in the Great Smoky Mountains National Park in 1995, Don Barger climbed Chilhowee Mountain hoping to gaze across the valley below. All he saw was a wall of gray haze. Today, he said ...

Department of Earth and Environmental Sciences, The University of Manchester, Manchester M13 9PL, U.K. Department of Earth and Environmental Sciences, The University of Manchester, Manchester M13 9PL, ...

Due to recent changes in HVAC regulations at the federal level, this refrigerant is being phased out by HVAC companies in favor of natural and eco-friendly refrigerants. In fact, the use of R-410A ...