Excavated from a nearly 2,000-year-old villa in Valencia, Spain, the broken-up murals once formed fresco decor ...

Most teens credit social media with feeling more connected to friends. Still, roughly one-in-five say social media sites hurt their mental health, and a growing share think they harm people their age.

As hunter-gatherers settled down into agrarian civilizations, society had ... each spouse." The shift from "common law" marriages — where two people (or their families) simply declared they ...

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