Save the Chimps bid a sad farewell on Thursday, July 7, to one of our elder statesmen, Lou.

Filmmaker Allison Argo shares some thoughts on the making of "Chimpanzees: An Unnatural History."

In 1959, the Air Force sought infant chimps for use in research evaluating the physical effects of space travel on the body.

Several months ago, Ron began retaining water -- for chimpanzees, a symptom of heart disease. He's being sent to a sanctuary in Florida.

After work in show business, 37-year-old chimpanzee Billy Jo was sent to the lab for use in medical research.

Filmmaker Allison Argo decided to make a film that would tell the stories of some of the chimps she had encountered, so their sacrifices would never be forgotten.

Meet some of the chimpanzees now living in chimp facilities featured in "Chimpanzees: An Unnatural History."

Human lives have been influenced by animals in matters that reach far beyond the food chain. In surprising ways, animals help teach, heal, and strengthen people -- in body, mind, and spirit.

Support is growing for the creation of sanctuaries for chimpanzees used in research, allowing them to spend the rest of their long lives with greater dignity and freedom.

(Airs Sunday, June 20) While we are mesmerized by their likeness to our species and we have continually found uses for chimps, we never considered what they wanted or needed.