Many older buildings built before the late 1990s contain asbestos.

Many of them are in a dangerous condition and at least one contains asbestos.

The experts can only guess at how many American homes contain asbestos.

A number of building materials still in use today contain asbestos.

Any building built or refurbished before 2000 could contain asbestos.

Do not break or damage any material that may contain asbestos.

It also may contain lead, asbestos or different hazardous materials.

Good news is that the old insulation did not contain asbestos.

City officials said the first eight samples of air taken in the area contained more asbestos than the 1 percent allowed by law.

Some buildings, for example, still contain asbestos that has to be removed.