Asbestos is a naturally occurring mineral that was once widely used in the construction industry due to its fire-resistant and insulating properties. However, it was later found that inhaling asbestos fibers can cause serious health problems, including lung cancer, asbestosis, and mesothelioma.

Asbestos is now considered a hazardous substance, and its use in construction and manufacturing is heavily regulated. However, there are still many older buildings that contain asbestos, and its proper removal and disposal is important to ensure the safety of both workers and the public.