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Children and adolescents exposed to high levels of traffic-related air pollution have a higher risk of developing asthma, according to a systematic review and large-scale meta-analysis performed by researchers from the University of Leeds and the Barcelona Institute for Global Health (ISGlobal). An estimated 334 million people suffer from asthma worldwide, and numerous studies show…

Stress benefits the human body. It can strengthen the body’s immune system and prompt an immediate reaction to real danger. But stress can also be detrimental. Stress, especially chronic stress, can weaken the body’s immune system. It can cause heart disease, high blood pressure and a variety of other ailments. Stress is linked to all…

Although smoking is the #1 cause of lung cancer, almost one in five people in the U.S. diagnosed with lung cancer this year have never smoked. The second leading cause of lung cancer is exposure to radon in houses and buildings. Secondhand smoke and asbestos are also among the top causes. And in 2013, the…

There are many types of particle counters dependent upon the depth of particle analysis required: To measure ultrafine particles (size in nanometer range) one may utilize a condensation nucleus particle counter. Ultrafine airborne particle smaller than 0.1µm (micron), which generally cannot be detected by ordinary light-scattering particle counters, can be optically measured by condensation growth…