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Save the karate for the kids. To stave off depression among the elderly, a new study proposes the practice of a gentler martial art — tai chi.
As my colleague Bryan Walsh reported back in 2008, wind farms and solar panels aren’t the only places that scientists have been looking for some extra electricity. From knee braces that tap into the energy in a person’s stride to vibration harvesters that soak up energy from the buzz of a busy highway, researchers are [...]
Although arthritis is extremely common, people still have many misconceptions about the disease. How much do you really know?
