This documentary-only streaming service is $149.99 for life, its lowest-ever price

TL;DR: Get a Curiosity Stream lifetime subscription for $149.99 (reg. $399.99).
Curiosity Stream Standard Plan: Lifetime Subscription
Netflix keeps burying its documentaries under three rows of reality shows. Curiosity Stream doesn't have that problem because documentaries make up the entire catalog.
A Streamer with no subscription
The large library covers science, history, nature, and technology, with thousands of titles and new ones added on an ongoing basis: ancient Rome, deep space, and wildlife, including a solid lineup of David Attenborough programs . Series like Engineering the Future, Deep Time History, and Into the Jungle each dig into a different corner of how the world actually works, rather than another true-crime rehash.
It streams in HD across phones, tablets, and TVs, and the iPhone and iPad apps let you download episodes ahead to watch later. Search handles general topics well, so chasing a rabbit hole about deep-sea creatures or ancient Rome doesn't take much digging, and the interface itself stays out of your way.
Bookmarking and resume playback mean you can always get back to what you want to watch, even if you switch devices.
It's also just a good thing to fall asleep to. Swap out reality TV or a movie you have to actually pay attention to for a low-stakes documentary, and it's a lot easier to drift off without missing anything that matters. Between that and the actual educational value, it's a natural fit for anyone who'd rather spend an evening learning something than rewatching a show for the fourth time.
Get Curiosity Stream lifetime access for $149.99 (reg. $399.99).
StackSocial prices subject to change.
Mashable and Yahoo may earn commission from links in this article.
Check out Yahoo's latest streaming advice, based on hands-on testing.
Yahoo Streaming Guides: Best streaming services | Best live TV streaming services | Best streaming services for sports | Best streaming deals | Best free TV streaming services | Best VPN for Streaming
Yahoo Streaming Reviews: Amazon Prime Video review | Apple TV+ review | DirecTV Stream review | Disney Plus review | ESPN vs. ESPN+ review | Fubo TV review | Hulu review | Hulu + Live TV review | Max Streaming review | Netflix review | Paramount Plus review | Peacock Review | Philo Review | Sling TV review | YouTube TV review
