Every year, for millions of years, a huge number of painted lady butterflies have migrated thousands of miles across Europe, the Middle East and Africa. Though they've been a common sight throughout ...

A new institution in the harbor of Rotterdam, the Netherlands, combines art and artifacts to underscore that migrant journeys are part of a universal human experience. By Nina Siegal Reporting from ...

Ruby-throated hummingbirds are among some of the most incredible migrating animals, traveling hundreds of miles in a single flight.

Witness one of the strangest and most heartbreaking chapters of 1930s America. These colorized photos capture the surreal world of the Dust Bowl migration — endless dust storms, abandoned farms, ...