Photos: Scientists trace a butterfly migration route that is millions of years old. By Natalie Escobar (NPR) April 16, 2025 3:08 p.m.

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration. In Constant Bloom ...

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration. In Constant Bloom ...

A painted lady butterfly crosses Erg Chigaga in Morocco. Each year, painted lady butterflies cross the Sahara and Arabian deserts, timing their migration to the brief bloom of wildflowers that ...

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration. In Constant Bloom ...