Formaldehyde’s fumes can cause wheezing and a burning sensation in the eyes, especially when they accumulate indoors. That danger was apparent when formaldehyde in plywood used to build ...

Industry and transportation are major contributors, but formaldehyde also comes from cigarette smoke and is created when things burn, like forest fires. Formaldehyde even occurs naturally in the ...

"However, wood burning is strongly discouraged ... carcinogenic substances such as particulate matter, benzene and formaldehyde, which are harmful when inhaled," the air district said.

Q: We live in the fire zone in Altadena, California. After the evacuations ended, we came home, and now my throat is ...

A trash-burning plant in Bristol that has been the subject of scores of complaints from residents appears likely to gain ...