To reduce exposure to electromagnetic fields, when wiring a building, avoid running electrical wiring under floors and across walls. Wherever possible, run these wires above (or if necessary, below) walls.  When this cannot be done, wiring should preferably be run across ceilings, where it is generally the maximum distance from the building's occupants.

A study conducted over 2 years on 861 asthmatic inner-city U.S. children, aged 5 to 12 years, has found that  the children’s lung function was significantly reduced following exposure to higher levels of air pollutants such as sulphur dioxide, fine particulate matter and nitrogen dioxide. 

U.S. researchers have found that the more exposure people have to formaldehyde, the higher their risk of getting Lou Gehrig’s Disease, a condition involving the gradual death of nerve cells which control muscle movement.

An investigation, by the U.S. based Environmental Working Group, into pet exposures to household contaminants such as plastics, food packaging and stain-proofing chemicals, heavy metals and fire retardants, has found that average levels of many chemicals were higher in cats and dogs than they typically are in people.