North America’s tallest mountain is shorter than we thought


Tim Rains/National Park Service

It doesn’t look any smaller, butDenali is now officially 10 feet shorter than we thought.

The US Geological Survey set out to measure North America’s tallest mountain this summer, and found a big surprise: Though it’s still the tallest mountain in North America, Denali is only 20,310 feet high.

The last measurement, at 20,320 feet, was taken in 1953.

Researchers aren’t sure if the difference is due to geological changes, or advances in technology.



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