In this Article, from the PbS news reveal how Moss and Lichens have adverse health effects on humans in general. Moss and Lichens are essentially little sponges that absorb everything in the air around them, including pollutants. Moss had never been studied extensively in an urban environment. A group of scientists from Portland , Jovan, and a colleague decided to study how moss and lichen were affecting the environment the results were shocking to the community. They chose a type of moss called Orthotrichum that could be found nearly everywhere in the city.
Moss on tree Trunks.
Follow the link below to the video showing the shocking results of scientist study of Moss in Portland, Oregon.
http://www.pbs.org/newshour/bb/moss-revealed-undetected-air-pollution-threat-portland/#.WAfEcVtnqxs.gmail
Health Effects.
The heavy metal Cadmium slowly reacts with air to for cadmium oxide. The united states department of Labour stated that "Occupational exposure to cadmium can lead to a variety of adverse health effects including cancer. Acute inhalation exposure (high levels over a short period of time) to cadmium can result in flu-like symptoms (chills, fever, and muscle pain) and can damage the lungs. Chronic exposure (low level over an extended period of time) can result in kidney, bone and lung disease.
Exposure and Control
In a work environment, workers can be exposed to cadmium by breathing in dusts, fumes, or mists containing cadmium. Cadmium or cadmium compounds can also get on the skin, contaminate clothing or food, and be ingested (which is also one of the routes of exposure). The most effective way to prevent exposure to a hazardous metal such as cadmium is through elimination or substitution.
Cadmium structure
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