If you have a mold or mildew problem in your home you will want to use the best chemicals to get rid of it. Mold can destroy the structure of your home and affect your family's health adversely. There are different chemicals you can use depending on where the mold is growing.
Normally the transition from a spoken to an extinct language occurs when a language undergoes language death while being directly replaced by a different one. For example, some Native American languages were replaced by English, French, Portuguese, Spanish, or Dutch as a result of colonization.
As mentioned, the Endangered Languages Project is one among many fascinating projects designed to conserve dying languages. I had no idea that there are hundreds of distinct languages in the world with less than ten fluent speakers and some with only one elderly native speaker.