Monarch butterflies in Northern California are adapting to a changing climate by embracing an unexpected strategy: breeding in the winter. The shift could be key to the survival of the iconic ...

Western monarch butterflies spend winter along the California coast. You can see the insects in Pismo Beach, Pacific Grove and Santa Cruz.

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration.

Monarch butterflies are fluttering along California’s coastal areas as a part of their annual winter migration — and there are a few spots where you can see them in action.

The Northern Lights provided a stunning display across clear skies in large portions of the United States on Thursday night.

California's most famous monarch sanctuary looked almost barren in a good year. The dwindling butterflies are a symptom of a larger apocalypse.

Monarch butterflies are fluttering along California’s coastal areas as a part of their annual winter migration — and there are a few spots where you can see them in action.

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration. In Constant Bloom, photographer ...