It's a common scene in medieval marginalia. But what does it mean?
New technical analysis dates Yale's Vinland Map to the 1920s or later, not the 1440s as previously suggested
But national population numbers have tripled since then. Influenza killed one in 150 Americans, while one in 500 people have died from the coronavirus
One town's strange journey from paranoia to pardon
Researchers captured more than 5,000 birds to learn how our now-extinct ancestors foraged for food