We asked conservation researchers around the world to send us their favorite papers of 2025. They address the planet’s most pressing problems — and important solutions.

Unintended consequences can become indispensable — in architecture and in efforts to preserve life on Earth.

Experts say there’s “no substitute” for the Bird Banding Laboratory or the Breeding Bird Survey, which help reveal the health and status of avian populations across the country.

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.

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

Citizen scientists are helping restore the ecosystem engineers to the Cascade-Siskiyou National Monument.