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Real, Rare, and Amazing Conditions

If you could have a superpower, what would it be? Flight? Super-strength? An imperviousness to cholesterol? Tetrachromatism A condition called tetrachromatism enables a person to see more of the color spectrum than the rest of us. Those with it can notice more subtle shades of colors, even within a single object; something may appear red […]

Still Going!

For centuries, inventors have been pursuing the concept of a perpetual motion machine—a device that generates its own power and, like the Energizer Bunny on TV commercials, keeps “going, and going, and going…” Here are two real-life objects that are doing just that.