Chilean Patagonia is a rugged region—isolated, wild, and ecologically diverse. Where else could you stand next to human-size rhubarb leaves, watching dolphins play in a fjord while impressive waterfalls cascade from the glaciers behind you? To see it all would take years. But on a road trip down Chile’s Route 7—also called the Carretera Austral—you…

We are deep in the tea mountains of Xishuangbanna Prefecture in China’s Yunnan Province. Villages inhabited by the Dai, Bulang, Lahu, Akha, and other ethnic minorities lie across ravines or peek out from the forest. Glancing up a hillside, I spot people perched in the uppermost branches of some tea trees. Our driver pulls over,…