Kickball Robert F. Kennedy Jr. may end up getting tapped to run the US Department of Health and Human Services if Donald Trump is elected president — but first, he's got some explaining to do about all those weird animal stories. In a statement

A drug that slows aging may already be on the market. Scientists have long been interested in metformin, a widely prescribed drug used to treat Type 2 diabetes, for its potential to delay aging. In worms, fruit flies, and rodents, the drug—on