Lyell Glacier in Yosemite . We're saying goodbye to an old friend in Yosemite National Park. The Lyell Glacier - second largest in the Sierra Nevada - has thinned rapidly over just the last few years. Note the newly exposed bedrock on the east (left) side; it's estimated the glacier may now be only 15-20 feet thick. Currently the glacier is losing on average about three feet of thickness each year. How much longer until it's gone? For more

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Photo credit: © Natural History Archive / Alamy / Afripics
License: Licensed
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Keywords: america, american, ccrp, change, climate, climatechange, conservation, country, glacier, global, globalwarming, history, land, lands, lyell, national, natural, nature, nps, park, parks, preserve, program, public, response, service, tbt, throwbackthursday, usa, warming, widlife, wilderness, yosemite