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 ...

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A butterfly that went extinct decades ago after the destruction of its Bay Area habitat is now the driving force behind its restoration with the help of a close relative now fluttering in its terrain.

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, ...

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 ...