14 week-old twin polar bear cubs play during their first presentation to the media in Hellabrunn zoo on March 2014 in Munich, Germany. The male and female twins were born on December 2013 in the zoo. (Photo by Alexandra Beier/Getty Images)
Polar Bears Evolved Just Years Ago Credit: U. Fish and Wildlife Service.Here two polar bear cubs snuggle up. The polar bears, which evolved from brown bears, originated some years ago, according to genetic analyses of a polar bear fossil.