This remarkable video report shows laboratory chimpanzees who've been 'retired' to a new facility in Louisiana. Many of them have never known life outside concrete floors and walls, or wire and steel-barred cages. To see them suddenly realize there are no bars, and there's grass underfoot instead of concrete, is almost heartbreaking.
You can read more about the chimps and their new sanctuary here. I'm neither an environmentalist nor an animal-rights campaigner, but this touched me, particularly having seen chimps in the wild in