nitrogen, helium, hydrogen, argon, and nitrous oxide. The company also makes dry ice, synthetic air, fire-fighting gases, medical oxygen, liquid petroleum gas, welding mixture, and speciality ...

nitrogen dioxide and ozone that cause smog and lead to asthma and lung disease. But California officials have also used waivers to curb carbon dioxide, a chief cause of global warming. Gas powered ...

Most of the world's population is exposed to polluted air and or those living in cities with chronically bad air, the smog ...

Most of the world's population is exposed to polluted air, and for those living in cities with chronically bad air, the smog ...

That is way higher than the 200psi of a domestic cooking gas tank. Dr Omar said mishaps were often caused by fittings, namely the valves, regulators ... 21% oxygen and 78% nitrogen.

The regional landfill north of Corvallis is still operating under a 15-year-old major air pollution permit while Oregon’s environmental regulator ... off landfill gas at Coffin Butte works ...

The risk is high and environmental regulators have no consistent way ... but you get the picture,” Brown said with a laugh. Nitrogen fertilizers offer soils and plants only some of what they ...

The company abruptly halted sales of its internal combustion engine vehicles late last month, after receiving incorrect information from environmental regulators about new rules for medium and ...

The agency approved several of those waivers in December and January, including a landmark rule that will ban the sale of gas ... for nitrogen oxide emissions. “They (federal regulators) put ...

A Dutch court ordered the government on Wednesday to drastically cut nitrogen emissions in the ... EU antitrust regulators said on Monday, a move which would stave off a possible hefty fine.

In response to environmental challenges, and relying on the best available techniques, regulations are evolving to meet ...