The winter television season — will that combination of words ever stop sounding strange? — is upon us in all its abundance. And it’s more abundant than ever. Here are 21 new and returning shows to keep an eye out for over the next few months. Of course that’s more than anyone can watch. In most cases it’s too early to tell which shows will pan out, but if you nailed me to a tree, I’d tell you to definitely make time for “High Maintenance,” “Shrill,” parts of “Documentary Now!” (especially the episodes titled “Original Cast Album: Co-op” and “Waiting for the Artist”) and, if you have children, a co-view of “Carmen Sandiego.”

[Read about the best TV shows of 2018.]

‘When Heroes Fly’

Israeli TV series usually stick close to home, but this action thriller from Omri Givon (“Hostages”) ventures into the Colombian jungle, where four veterans of the Israeli Defense Forces conduct a rescue mission a decade after their service. It stars Tomer Kapon, who played a rebellious young counterterrorism agent in the first season of “Fauda.” (Jan. 10, Netflix)

‘Sex Education’

An awkward guy (Asa Butterfield) and an outcast girl (Emma Mackey) form an alliance in this teen-sex comedy set at a British secondary school. The boy’s anxieties are aggravated by the fact that his mother is a free-loving sex therapist; the show is most notable for the fact that the mother is played by Gillian Anderson. (Jan. 11, Netflix)