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Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.

Latest news and features on science issues that matter including earth, environment, and space. Get your science news from the most trusted source!

Daily source of timely and informative medical news and health news

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

The Open University

Dr. John Grohol

Psychology Today - Commentary, Research and News that cover all aspects of Human Behavior, from the workings of the brain, to relationships and the larger cultural forces that influence our decisions.

Everything you need to feel smart again.

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

BrainFacts.org is a public information initiative of The Kavli Foundation, the Gatsby Charitable Foundation, and the Society for Neuroscience. It is an authoritative source of information about the brain and nervous system for the public. Visit us fo...

News and commentary on culture and politics

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

Photographic Memory game for kids and adults. It helps you to improve your memory, concentration and keeps your brain sharp.