On Wednesday, Frank Santana, a researcher at the San Diego Zoo Institute for Conservation Research, released 65 froglets into a Southern California creek. The small amphibians represent new hope for an endangered species, the mountain yellow-legged frog. (We wrote about how specimens of this frog were refrigerated for preservation in 2010, part of the restoration...

On Wednesday, Frank Santana, a researcher at the San Diego Zoo Institute for Conservation Research, released 65 froglets into a Southern California creek. The small amphibians represent new hope for an endangered species, the mountain yellow-legged frog. (We wrote about how specimens of this frog were refrigerated for preservation in 2010, part of the restoration...