• Disappearing Destinations authors Heather Hansen and Kimberly Lisagor recommend 37 locales to see before they’re spoiled—and ways to help in each. Three of their favorites:
1 EVEREST NATIONAL PARK Lakes formed by melting glaciers may wash away villages in this Nepalese sanctuary. Go responsibly—book through ecotourist groups like KarmaQuest—and give back by contributing to WWF Nepal.
2 GALAPAGOS ISLANDS With large cruise ships now allowed in, the ecological balance is threatened. Travel on a small vessel, use local guides and keep a respectful distance from the wildlife.
3 AYSEN, PATAGONIA A fly-fishing mecca and “the coolest place I’ve been,” says Lisagor, Aysén may see its rivers dammed by a power company. You can support groups trying to stop it (the Sierra Club is one).