In between the ponderosa pine and white fir trees on the Spring Mountains of Southern Nevada lives an endemic blue butterfly. Due to population decline and habitat loss, the Mount Charleston blue ...

After Hurricane Andrew ripped through South Florida in 1992, the already-scarce Miami blue butterfly almost went extinct: No one recorded a single sighting for years. Finally, in 1999, a cheer went up ...

The Smith's blue butterfly may be tiny, but it's endangered in a big way. It spends its whole life within a few hundred yards of two native plants, seacliff buckwheat and coast buckwheat — and is ...