Cal Academy of Sciences and The Presidio join conservation efforts to bring blue butterflies back to San Francisco coast. Genetic sequencing links Silvery blue butterflies to extinct Xerces blue.

OAKLAND, Calif. - In the San Francisco Bay Area, the Xerces blue butterfly went extinct along the San Francisco coast some 80 years ago, but now the California Academy of Sciences and the Presidio ...

I wonder if conservation efforts would have started soon enough to prevent the total disposal of the San Francisco dunes, and ...

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Their backs were gray or pale blue, and they had a white belly and a long, narrow beak full of cone-shaped teeth. This graceful animal that once roamed the Arabian Peninsula was declared extinct in ...

Others, for whatever reason, died and became extinct. But now humans are involved ... Will the reappearance of a cloned xerces blue butterfly effect the survival of the threatened Monarch ...

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Eighty years after the Xerces Blue butterfly vanished from San Francisco in 1943, researchers analyzed century-old specimens to find its closest living relative, the Silvery Blue (shown above).

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CBS host Gayle King responded to the backlash over the Blue Origin space flight on Tuesday and suggested the all-female crew was being held to a different standard than men who've been to space.