U.S. states hope to tap Canada’s network of large dams to meet low-carbon goals, but do better options exist closer to home?

Identifying the shocking number of birds killed when they collide into local buildings was just the first step toward saving them.

Smalltail shark populations have declined by 90% in Brazil, and new research finds that overfishing has pushed the species perilously close to extinction.

Collisions between whales and ships have increased, but an effort to hear, see and predict whale behavior could help reduce fatalities.

Heat, drought and water policy have created a slow-motion catastrophe at a refuge on the California-Oregon border.

Biodiversity loss threatens national security. We need to invest in technologies to preserve our vital food varieties.

A growing body of research finds the dangers to pollinator populations are greater than ever. But studies also point to some potential solutions.

A recent string of massive landslides in Alaska and around the world bears the fingerprint of climate change.

Erin Brockovich, E.O. Wilson, Jane Fonda and others deliver important new books addressing the fights against climate change, the extinction crisis and toxic pollution.