The Agency for Toxic Substances and Disease Registry, an agency of the US Department of Health and Human Services, seeks "to serve the public by using the best science, taking responsive public health actions, and...

Developed as an integral part of the Canadian government, Agriculture and Agri-Food Canada "provides information, research and technology, and policies and programs to achieve security of the food system, health of the...

While Alfred Thayer Mahan may have been obsessed with the role of naval power in warfare, the 20th century saw the rise of air and space power in a way that might have surprised even Mahan himself. Persons with an...

This site is the web home for the American Gastroenterological Association which is an online resource for Association members as well as "other medical professionals with an interest in digestive diseases, patients and...

This case study considers the problems that would arise if one were to cross over into a mirror-image environment. The case looks into the lock-and-key theory of enzyme action. This material would be most useful in...