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The American Heart Association, one of the world's premier health organizations, delivers advice and info at its online home, from diet tips to ideas for preventing heart disease. AHA focuses on cardiovascular disease, of course, but here you'll find lots of pointers for healthy living.

We all know we should exercise, but what exercises are best for us? The American Council on Exercise describes exercises that are safe and effective for those wishing to stay in shape.

Findlaw.com provides a fantastic set of tools for anyone interested in American Law. Widely used by legal professionals, it can also be used profitably by laymen. Learn the facts about the laws that govern you from this excellent site!

The online manifestaton of Scientific American magazine, Sciam.com presents clear, intelligent writing on the most important scientific discoveries, initiatives, and controversies of our time. Much of the content is free. And you can search past issues!