Old buildings can have old materials inside them. Some of these materials may not be safe if they break or become dusty. Asbestos is one of those materials. Tiny asbestos dust can float in the air and may be harmful. That is why people try to cover ...

When people fix old floors, they sometimes find sticky glue under the tiles. This glue is called mastic, and in very old buildings, it may contain asbestos, which can be harmful.  To remove this glue, people use a special product called an asbe...