Information about arthritis pain relief, symptoms, medication, treatment, and diet. Information on various types of arthritis including rheumatoid arthritis, osteoarthritis, gout, psoriatic arthritis, lupus, fibromyalgia, Sjogren's syndrome, scleroderma, ankylosing spondylitis and other arthritis related conditions.

The Health Channel explores both scientific and cultural aspects of the human body. Read health articles about medical technology, medical mysteries and staying healthy.

Science, astronomy, and space flight news, science and renewable energy encyclopedias. Maintained by science writer David Darling, Ph.D.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world's largest medical library. It collects materials in all major areas of the health sciences and to a lesser degree in such areas as chemistry, physics, botany and zoology. The collections stand at 5 million items--books, journals, technical reports, manuscripts, microfilms, photographs and images. Housed within the Library is one of the world's finest medical history collections of old (pre-1914) and rare medical texts, manuscripts, and incunabula.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Visual Dictionary, where words are defined as pictures, for leaning the exact names of objects. Different from a traditional dictionary or from encyclopedia because the images replace the words.