ScienceDaily: “Blue haze,’ a common occurrence that appears over heavily forested areas around the world, is formed by natural emissions of chemicals, but human activities can worsen it to the point of affecting the world’s weather and even cause potential climate problems, according to a study led by a Texas A&M University researcher. Renyi Zhang, professor of atmospheric sciences who has studied air chemistry for more than 20 years, says blue haze (tiny particles or aerosols suspended in the …