The Butterfly Effect

We may be able to resurrect a species of butterfly from extinction within this decade. Scientists are trying to bring back the Xerces Blue, an iridescent butterfly that once roamed the dunes of San Francisco’s Sunset district. They’re approaching its de-extinction from two directions: through genetic engineering, and through relocation of a seemingly closely related species called the Silvery Blue. The hope is that they will be able to artificially ‘evolve’ the Silvery Blue to become the Xerces Blue.
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