About to dive into 'Critical Mass' on your favorite screen? Here’s where you can watch it, including streaming and cable services with rental, purchase, and subscription options, so you can start watching sooner. In the US, you can currently rent, buy, or stream 'Critical Mass' via subscription on YouTube, Prime Video, Apple TV Store, Google Play Movies, Kanopy, Tubi TV.
Here are some useful notes to know before watching about the documentary flick. Critical Mass starring Robert Rapier has a Not Rated rating, a runtime of about 1 hr 40 min. The release date of the movie is April 25th, 2013.
Wondering what this story is all about? Here's the plot: "Things aren't looking good for the world's population; as we multiply at an alarming rate there is not enough food, space... or sense. This intelligent film interweaves a fascinating 1960s rat experiment by Dr. John B. Calhoun with a slick snapshot of today's urban jungle."









































