HEATKEYS

Guide to commonly encountered toxic chemicals, environmental health risks, and the public

ChemSpider is a free chemical structure database providing fast access to over 26 million structures, properties and associated information.

Occupational Safety and Health Administration - Home

National Highway Traffic Safety Administration

NIST site provides chemical and physical property data on over 40,000 compounds.

Environmental Working Group (EWG) works to protect kids from toxic chemicals in our food, water, air and the products we use every day. We use research to help create federal policies that protect our children, our health, and our natural resources.

The eMedicine point-of-care clinical reference features up-to-date, searchable, peer-reviewed medical articles organized in specialty-focused textbooks, and is continuously updated with practice-changing evidence culled daily from the medical literat...

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Shell is a global group of energy and petrochemicals companies with around 93,000 employees in more than 90 countries and territories.