For centuries, the dazzling colours and intricate wing designs of butterflies have fascinated people. These insects have an incredible variety of markings, from the bright warning patterns of tropical ...

More than 20,000 votes cast in Butterfly Conservation’s poll of 60 native species to find nation’s favourite for first time The votes are in on Britain’s favourite butterfly, and it is one of the most ...

A tropical butterfly from the Heliconius tribe has evolved to live a maximum lifespan of 348 days, nearly 25 times longer ...

Delias sambawana, a butterfly that hails from Indonesia, at the Florida Museum of Natural History. Florida Museum photo by Kristen Grace and phylogeny by Hillis, Zwickl, and Gutell When Akito Kawahara ...

David Ozeri, MD, FACP, FACR, is a rheumatologist and current researcher at Sheba Medical Center in Israel. He worked at Kings County Hospital Center and treated veterans at New York Harbor Healthcare ...

This story appears in the January 2017 issue of National Geographic magazine. The difference in appearance between a species’ males and females is called sexual dimorphism. The term implies that there ...

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