Baby rhino is America's first born from artificial insemination

Southern white rhino calf at San Diego Zoo raises hopes for the future of wild rhinoceroses

The bumbling, sleepy rhino calf at San Diego Zoo is sure to delight animal lovers around the world. But for conservation scientists, his birth has additional meaning - it marks a significant step toward saving wild rhino populations from the edge of extinction.

The newborn southern white rhino is the first in North America, and the third in the world, born as the result of artificial insemination.