At age 75, Vadevino Alano keeps up a brisk pace as he strides through the forest on the way to the Armadillo’s Den — a spectacular cave in southern Brazil. When he reaches the cave’s opening, Alano is ...

The ancient earthworks—giant geometric or anthropomorphic drawings in the land created thousands of years ago using stones and mounds of dirt—are primarily visible from the air and were ...

trees of North and South America, and trees of Europe and Asia. Elderflora is a sweeping, exceptional tribute to the oldest living organisms on Earth. It’s also a reminder that, even though many ...