CLEVELAND, Ohio -- Treadmills, stair climbers, stationary bikes. If your objectives are speed and endurance, there are no better tools. But what if your goal is strength? What if you love the ease of ...

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We can’t think of a single person who doesn’t enjoy playing with a handful of rare earth magnets now and again. We know that [Dave Johnson] certainly does. As a gift to his father in law, he ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...