Mind: Beyond Biden: How Close Is Too Close?

On Thursday afternoon, former vice president and potential presidential candidate Joe Biden released a video in which he discussed the importance of personal space. “Social norms have begun to change,” he said. “They’ve shifted, and boundaries of protecting personal space have been reset — and I get it.” Mr. Biden was responding to allegations by…

A Diet to Ward Off Gum Disease?

The right diet may improve gum health, a small study has found. German researchers studied 30 people with gingivitis, the inflammation of the gums that can cause redness, swelling and bleeding. A dentist measured the severity of their gingivitis and their levels of plaque, the bacteria-laden film that builds up on the teeth and can…