The Sierra Nevada yellow-legged frog is recovering in Yosemite, a beacon of hope for amphibian conservation. (Photo: Roland Knapp)

The mountain yellow-legged frogs of Yosemite National Park are in an epic fight for survival. Theirs is a tale of devastation and redemption, luck and suspense, and amphibians in helicopters.

And in an era of grim headlines about the state of nature, a recent UC study about them offers a rare glimmer of hope: These frogs, which were plagued nearly to extinction by a deadly fungus just a few years ago, are now poised for a comeback.

This Earth Day, the UC Newsroom is celebrating stories from the past year of UC research that illustrate the resilience of life on our planet and demonstrate the power of humans to help solve problems of our own making.

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