The processes that form continental crust from the denser basaltic rocks of the upper mantle may make the lower lithosphere ...
SODA SPRINGS, Calif. - The Sierra Nevada is in the midst of a dry spell, one of the longest winter periods without notable ...
“The Sierra Nevada red fox is a vanishing emblem of remote Sierra wilderness and a harbinger of climate change,” said Jeff Miller, a senior conservation advocate at the Center. “Endangered Species Act ...