At the facility, there are eight large enclosures, each described as "approximately half the size of a football field." ...

The Xerces blue butterfly went extinct along the San Francisco coast some 80 years ago. But scientists have identified a ...

It was last seen nearly a century ago, in 1930. And it was officially designated extinct in 1994, likely due, in part, to predation from foxes and cats. Now, all that scientists have to show for ...