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Thirty years ago, if you walked into a deli in Washington, D.C., you might find a dish called "Watergate Salad." And it's not bad. Soft. Tangy. You can taste why this caught on. And why it went away.

Joy can be cultivated. Hostility often masks depression. As one year ends and another begins, these six insights and tips from psychologists offer hope for a good new year.

Research shows that snapping too many pictures may harm your ability to retain memories. But selfie addicts, don't despair! There are techniques to make photography enhance memory, not undermine it.

An experiment involving dog treats suggests our canine pals may understand the difference when a human withholds a treat by accident and when they do so on purpose. But don't press your luck.

Making art is fun. But there's a lot more to it. It might serve an evolutionary purpose — and emerging research shows that it can help us process difficult emotions and tap into joy.

Some parents swear by it. They say it's the only way they and their babies get any sleep. Others parents say it's harmful. So what does the science say? Here we separate fiction from fact.

Along some coastlines toxic contamination could seep into basements or broken sewage lines in coming years. In California's Bay Area, regulators are grappling with how to protect people.

A new study predicts how far north these insects could live if climate change goes unchecked.

The science is nascent and a little squishy, but researchers are trying to better understand ASMR — a feeling triggered in the brains of some people by certain soft sounds and gentle gestures.

Will AI in health care create a two-tiered system in which poorer people will be seen by a computer instead of a doctor? That's one concern about the burgeoning technology.