If there is one subject on which Wikipedia can be regarded as an authoritative cite, it is current pop culture. Just search on the name of any television show and you should find either an end date or specific information on the next season.
The Futon Critic is excellent for this information. If you scroll down to the SHOWATCH section, it has lists of what’s been canceled, what’s airing (and how many episodes are left in the season), what’s coming back later (and when), and what’s still up in the air. Despite other rumors which get passed around (often including premature wikipedia updates), I never accept a show as canceled until it shows up on that site.
(yeah, I thought you meant an actual tv, lol! like the time we bought a humongous big old TV, years ago, rassled it home, into the house, up onto the shelf, and only THEN noticed the crack in the plastic on top - that thing had been dropped on its head and returned to the store! But it was so heavy we didn’t bother. And it worked fine for years and years.)
I sometimes look on IMDB.com and read the message boards of shows I like. If a show is in danger, or has been cancelled, there will be all-caps titles advising of the same in the lists of topics.
That’s how I learned Medium is most probably in its last weeks.
Thank you. I have searched many times for Nielsen ratings and have never found the second (or first for that matter) site. It has been bookmarked and backed up to xmarks. I’m also thinking of getting a tattoo.