A silver Toyota pickup rolled toward the outbound lanes at the Anzalduas International Bridge like any other southfacing car on the Texas border. To Customs and Border Patrol officers, it didn’t look ...

Explore the untold story of Appalachia, a region rich in culture and history yet sparsely populated. Learn the geographic, ...

As the frozen ground warms much faster than expected, it’s reshaping the landscape—and releasing carbon gases that fuel global warming. The Batagaika crater in eastern Siberia, half a mile wide and ...