© Provided by Xinhua LHASA, May 2 (Xinhua) What impact does an ultra-high altitude environment have on human health? What are the hazards for human
© Provided by Xinhua LHASA, May 2 (Xinhua) What impact does an ultra-high altitude environment have on human health? What are the hazards for human
Chicken farmers and auto designers follow different career paths, but soon both may be changing how they do their jobs as part of a campaign to clean up China's polluted air.Emissions from poultry waste and auto engines alike can contain potentially harmful levels of ammonia, a colorless gas with a pungent smell that's getting new attention as part of the country's battle