Nearly half of all stopover sites used by migrating birds in North America fall within urban areas.

A meditation on building the future without forgetting what already works.

This week we tackle the frustration and rage that can prevent us from realizing rewarding careers — and productive, fulfilling lives.

Traumatized, orphaned gibbon babies are stuffed into luggage and smuggled by air from southeast Asia to India.

These amazing, camouflaged reptiles have adapted to life in unique microhabitats, but that’s also made them more vulnerable to disruption.

“They are like our children now,” says one of the villagers helping to save critically endangered Asian giant tortoises.

This week we hear from readers about encouraging environmentalists, both young and old.

The science on wildlife PTSD is a rapidly growing field: How do we detect and treat post-trauma in our wild friends? And how can we prevent it?

Research tells us that we need sustainable forest practices. But how does this knowledge lead to action?

Illegal trade in rare ornamental plants is booming — fueled by weak enforcement and a changing climate. But the theft of 1,000 cacti from the Chilean desert has led to a landmark court case in Italy.