PBS is launching a new PBS Documentaries subscription service through Prime Video Channels. While the content is already up, the channel won’t officially launch and be available to subscribe to until August 4th. For a reasonable price of $3.99 per month, subscribers will have access to content like Ken Burns, NOVA, Frontline, American Masters, Anerican Experience, Nature, Independent Lens, POV, and more. This will be PBS’ fourth Prime Video Channel, joining PBS Masterpiece ($5.99/month), PBS Living ($2.99/month), and PBS Kids ($4.99/month).