A study showing that a molecular switch governing chronic inflammation can be turned off. Then, a study that shows that few of us are taking advantage of the great outdoors. And finally, doctors are reporting a strange, rare side effect of the active ingredient in Viagra—intensely blue-tinted vision.
Color blindness (or color vision deficiency) affects up to eight percent of men. Until recently, doctors could do nothing to treat it. Now high-tech glasses can make colors come alive for many people with the most common form of color blindness.