Social Gerontology & the Aging Revolution - This site is very comprehensive and easily navigated. It provides information on statistics, organizations, cultural experiences, associations, policy, and theories of aging, as well as links to material on the biological, social, and psychological aspects of aging.
Bright Focus Foundation - A non-profit charitable organization dedicated to funding research on age-related and degenerative diseases and educating the public about them. One of the United States' leading supporters of research on Alzheimer's Disease, glaucoma, heart disease and stroke.