The U.N.’s cultural agency warns that ice sheets on Kilimanjaro, in the Dolomites and in Yosemite and Yellowstone may disappear by 2050, highlighting travel’s impact on climate change.

The U.N.’s cultural agency warns that ice sheets on Kilimanjaro, in the Dolomites and in Yosemite and Yellowstone may disappear by 2050, highlighting travel’s impact on climate change.