Can an urban waterway reclaim its historical ecological health?

Follow a satellite’s-eye-view of the habitats of the Congo River.

Nowhere else are primates as diverse…or as endangered.

Lessons from one of the oldest marine parks may help restore our global oceans.

Its metropolitan area has grown more than 300 percent in recent decades.

As the suburbs flourish, animals struggle to survive.

How satellite data helps scientists map changes in one of Earth's great wildernesses.

One of the most abundant forms of ocean life is gelatinous goo.

Learn how communities in Thailand restored mangrove forests for the benefit of all.

Watch roads and parking lots multiply around the threatened Chesapeake Bay.