The Xerces Society for Invertebrate Conservation says, along the California coast, 4.5 million monarchs overwintered in the ...

which is threatened by human-caused climate change, loss of habitat, and exposure to insecticides. “The iconic monarch butterfly is cherished across North America, captivating children and ...

For thousands of years, millions of monarch butterflies have migrated from the northern U.S. and Canada to Mexico for the winter. But exactly how they know where to go is still a mystery.

NEW HAVEN, Connecticut, March 31, 2025 (ENS) – Climate change is altering butterfly ... released the results of the 28th annual Western Monarch Butterfly Count, reporting a peak population ...

Benji Jones is an environmental correspondent at Vox, covering biodiversity loss and climate change. Before joining ... late last year to grant monarch butterflies protection under the Endangered ...

Monarch butterflies are ... Yet these migrating butterflies, once a familiar sight, are plummeting toward extinction due to landscape-scale threats from pesticides, development and climate change.

Monarchs traveled to a remote part of Mexico, a journey they've made for thousands of years, and wintered there. Now tens of millions of the butterflies are on an epic aerial journey back north.

Conventional wisdom is that if you cultivate host plants, butterflies will come. Take, for example, milkweed. After declining monarch populations ... suggest climate change, habitat loss and ...

Scientific experts say global climate change may have a devastating impact on butterfly populations across the country.

(AP) — U.S. wildlife officials announced a decision Tuesday to extend federal protections to monarch ... survive climate change. The U.S. Fish and Wildlife Service plans to add the butterfly ...

Monarch butterfly populations are plummeting, with a shocking 96% drop recorded in the Western Monarch Count. Scientists warn habitat loss, climate change, and pesticides are driving the crisis-but ...

Monarch butterflies are ... Yet these migrating butterflies, once a familiar sight, are plummeting toward extinction due to landscape-scale threats from pesticides, development and climate change.