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A variety of medical disorders can be disruptive to our sleep. These may include: snoring, sleep apnea, insomnia, narcolepsy, parasomnias, circadian rhythm disorders including jet lag, restless legs syndrome, and many others. Learn what these disorde...

American Foundation for the Blind (AFB), a U.S. nonprofit organization enabling blind or visually impaired people to achieve equality and access. Provides information and referrals about living with visual impairment. Helen Keller devoted over 40 yea...

YouTube is a place to discover, watch, upload and share videos.

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

Lucid dreaming techniques for beginners, with step-by-step guides to conscious dream control and background research into the lucid dreaming mind.

Everything you need to feel smart again.

Articles from the Smithsonian Institution

Incredible stories about how wonderfully weird it is to be human. Curious about the way your body or brain ticks? E-mail The Body Odd or check us out on Facebook and Twitter.

Groundbreaking developments in science, space, technology, health, and the environment