From lost coastal routes to Denisovan encounters and the first Americans, these human migration mysteries still leave archaeologists and geneticists debating the evidence.

There was never a period when every passenger on every airline received identical treatment, and old airfares were often much costlier than today’s. Still, many full-service coach tickets once bundled comforts that now look strikingly premium. After US deregulation in 1978 intensified price competition, carriers cut cabin service and later unbundled many extras into separate fees. The result is a strange reversal: things once folded into an ordinary ticket can now make a flight feel upgraded.

Archaeologists in Germany uncovered 40,000-year-old bird carvings made from mammoth ivory, offering fascinating new clues about Ice Age art, culture, social connections, and how early humans survived.