Due to the presence of dissolved gases such as carbon dioxide, rainfall is naturally acidic. The release of other gases and chemicals such as sulfur dioxide during the combustion of coal and oil can cause rainfall to...

This special feature page from the American Chemical Society (ACS) showcases the up-and-coming field of "green chemistry," that is, the development of chemical products and processes that eliminate or reduce the use and...

ADA Online, from the American Dental Association (ADA), includes resources for professionals, patients, and students. The site contains membership information, ADA publications and position papers, research and...

Alzheimer's disease is one of the most serious health problems for the elderly, and no cure has yet been found. To shed some light on this mysterious illness, the National Institute on Aging provides this valuable...

Provided by the American Dental Hygienists' Association, this site's resources are valuable for both dental patients and hygienists to help understand "the importance of oral health to total health." Patients will find...