The plight of the monarch butterfly could cost farmers a valuable tool in the fight to protect crops from weeds and pests. An ...

Of the 554 species studied, two-thirds declined by more than 10%. But in one small corner of New York, a rare species is ...

The butterflies’ resilience shows that some species are capable of adapting to dramatic changes in climate, food availability and urban development.

WWF works to sustain the natural world for the benefit of people and wildlife, collaborating with partners from local to global levels in nearly 100 countries.

The U.S. Fish and Wildlife Service is reopening the public comment period for a proposed rule to list the monarch butterfly ...

The U.S. Fish and Wildlife Service is reopening the public comment period for a proposed rule to list the monarch butterfly as a threatened species under the Endangered Species Act.