Macworld There are a lot of streaming services out there. Some might say there are too many. Looking for a provider that offers as much bang for the buck as possible? Then check out Curiosity Stream, where a Standard Plan lifetime subscription is on sale for $169.97 until January 21 at 11:59 pm PT. Curiosity Stream works just like any other streaming service. As opposed to offering the same dull selection of movies and shows, however, it instead carries a huge catalog of enriching documentaries to satisfy your thirst for knowledge. And since it costs way less than what you’d pay for Netflix or…