Scientists have concluded that painted lady butterflies have flown across the Atlantic Ocean. 

KCBS Radio's Margie Shafer tells us about the research that is being described as a "brilliant piece of biological detective work."

Justin Sullivan / Staff / Getty Images

Scientists have concluded that painted lady butterflies have flown across the Atlantic Ocean. 
KCBS Radio's Margie Shafer tells us about the research that is being described as a "brilliant piece of biological detective work."
Justin Sullivan / Staff / Getty Images

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