Animal-rights activists come together in San Diego to stand up for tortured animals and hope others will follow.

Western monarchs face myriad threats. A network of advocates is doing everything they can to mitigate the dangers and unravel mysteries about monarch movements and behavior.

Experts say the growing commercial trade in wild, threatened species like corals is unacceptable and irresponsible.

From tiny seeds come big results: replanting seagrass meadows that help fish, protect coastlines, and absorb climate-heating carbon dioxide.

Scientists also declared several other extinctions, including the first documented plant extinction in New Hampshire.

The Trump administration has already rolled back planned limits on PFAS chemicals, which have been linked to cancer and other health problems.

The agency supports critical efforts to reduce wildlife trafficking, deforestation, land violence, and other threats around the world.

Previous support and pledges from the United States have helped to slow forest loss in Brazil. Will Trump reverse that progress?

Other new research this month looked at snow leopards, wolves, wildlife crossings, newly discovered species, and … scorpion copulation?

Climate change, drought, and fires — all caused or worsened by human activity — are rewriting the future of ancient Sonoran saguaros.