Agarikon is one of two endangered species of fungi in the United States. So rare is the species that scientists have placed samples of it in a biobank facility for safekeeping at the San Diego Zoo, in ...

JESSICA ALLEN CRUNCHED THROUGH fallen leaves among Manzanita trees hunting for something few have spotted before: the Manzanita butter clump - a rare and little-known yellow mushroom found, so far, ...