Some of the world's most extraordinary places and experiences are changing fast. Glaciers are retreating, coral reefs are bleaching, wildlife populations are shifting, and remote communities are transforming. For travelers who want to witness these wonders, time is not unlimited.

"Last chance tourism" is complex - visiting threatened places can bring economic support and conservation awareness, but it can also contribute to the very pressures causing change. The key is traveling responsibly, with operators who give back and practices that minimize impact.

In this topic, we'll explore destinations and experiences that deserve priority on your travel list - not to promote fear, but to help you make informed decisions about where your limited travel time and resources can have the most meaningful impact.