Decades ago, India’s tigers were on the brink of extinction. Slowly, their numbers have rebounded. But that ecological success has prompted a dire problem—and a race to save many of them from genetic ...

When a Moroccan today refers to Agadir as being in “south Morocco,” a colonial ghost haunts the language. Unbeknownst to many, this casual phrase unintentionally excludes Western Sahara from Morocco’s ...

The United States has never had more 401(k) millionaires, yet the milestone says as much about who is being left behind as it ...

When unusual illnesses strike a village, it's often teachers who notice students falling sick in clusters. When livestock die unexpectedly, community health volunteers hear about it first.

“I once worked at an elevation of more than 5,000m in Bolivia and it was very difficult to breathe, eat and sleep.” Initially ...