The Dark Side of Space Chimps

Who can resist a story that contains the following line?

Cassidy does not skimp on the darker side of the space chimp story.

SPACE.com has an interesting article by Jeremy Hsu about a new documentary of the history of the use Chimpanzees in the space program.

I am sure you are grateful that I resisted the urge to add a picture from "The Planet of the Apes."