Critical Mass Lobby CardThis summer Mike Freedman finished his first feature film, "Critical Mass," a documentary that explores human population growth and its effects on the planet and us. Prior to the film's showing at the Mill Valley Film Festival Saturday, Oct. 13 and Sunday, Oct. 14, Freeman caught up with KRCB's Danielle Venton.

Freedman explains why he thinks in terms of "crowding," not "over population."

Before the film can be distributed widely, Freedman and his team need to pay for using archival footage. They've launched an Indiegogo campaign in the hopes of raising the needed $30,000.

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