It’s been roughly 80 years since the Xerces blue butterfly was last spotted flitting about on pastel wings across coastal California sand dunes. But scientists are still learning about the insect. The ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The first insectile casualty of human activity in the United States was ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. As the first North ...

Durrell Kapan propped himself on his elbows to inspect a shrubby plant. He peered through a monocular in search of a sign that a pioneering experiment to restore something missing from these coastal ...

Add Yahoo as a preferred source to see more of our stories on Google. A Silvery Blue butterfly. Gayle Laird More than 80 years after the iconic Xerces Blue butterfly vanished from San Francisco, ...

The last time anyone saw the blue butterfly alive was in the 1940s. Since then, it has sparked a large insect conservation movement. With shades ranging from azure to cyan depending on which way the ...

The Xerces Blue butterfly (Glaucopsyche xerces) was native to the coastal dunes of San Francisco, in the United States. As the city grew, much of the butterfly's habitat was destroyed and its ...