National Geographic explorers faced extreme weather and record crowds as they struggled to install a crucial network of weather sensors. Tom Matthews, National Geographic explorer and climate scientist, discussed what it was like installing the world’s highest weather station on Mount Everest. 
KATHMANDU, Nepal - Starting in late 2025, the permit fee for climbing Mount Everest will increase by more than 36%, according to a private expedition group based in the Himalayas.

Under the revised fee structure set by the government of Nepal, climbers will

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