Environmentalists say monarch populations are shrinking because of warmer temperatures brought on by climate change, agricultural expansion and herbicides that have hindered growth of milkweed.

Federal wildlife authorities announced a proposal to list the monarch butterfly as a threatened species.

The loss of pollinators like the monarch could have far-reaching consequences for ecosystems and the people who rely on them.

U.S. officials decided to extend protections to monarch butterflies after warnings from environmentalists that populations ...

The major U.S. Fish and Wildlife Service’s proposal would declare the iconic species as threatened, with federal scientists ...

The U.S. Fish and Wildlife Service on Tuesday proposed to add the monarch butterfly to the threatened species list.

The Biden administration is proposing protections for the monarch butterfly – though the protections face an uncertain future ...

U.S. wildlife officials announced a decision Tuesday to extend federal protections to monarch butterflies after years of warnings from environmentalists that populations are ...

The U.S. Fish and Wildlife Service plans to add the butterfly to the threatened species list by the end of next year ...

The U.S. Fish and Wildlife Service proposed listing the monarch butterfly as a threatened species on Tuesday, citing a ...