The Atlas blue butterfly is quietly turning into one of the most surprising discoveries in modern biology. It is not famous ...

Scientists have confirmed that the Atlas blue butterfly carries the most chromosomes of any animal, with 229 pairs. Unlike duplication, its chromosomes split apart, reshaping its genome in surprising ...

A small blue butterfly that lives along the Florida coast is the latest addition to the Endangered Species List, federal officials announced this week. Effective today (April 6), the Miami blue ...

CLARENCE, N.Y. — "Everything's connected, the cause and effect. One thing disappears, it's going to have an effect somewhere down the line. You might not see it right away," said David O'Donnell, ...

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This article was originally published in High Country News. From the top of Pigeon Butte in western Oregon’s William L. Finley National Wildlife Refuge, the full width of the Willamette Valley fits ...

The Atlas blue butterfly (Polyommatus atlantica), which is native to Morocco and Algeria, is estimated to have about seven times as many chromosomes as most other butterflies and nearly 10 times as ...

Four rare butterfly species have fluttered into view during my continuing quest to photograph the endangered Mount Charleston blue butterfly. Forest-sent consolation prizes that I can’t complain about ...