There’s new hope for an endangered California frog that has vanished from half of its habitat. The state Fish and Game Commission on Wednesday approved protections for five of six populations of the foothill yellow-legged frog. …The commission voted to list the frogs as endangered in the Southern Sierra, central and southern coasts. Populations in the Northern Sierra and the Feather River will be listed as threatened. …The tiny, pebbly-skinned frogs were once found from Los Angeles County to the Oregon border but their populations have shrunk thanks to threats from human encroachment, dams, climate change, pollution and activities ranging from logging and mining to marijuana growing.