BillNyeAfter single handedly exciting a generation of future scientists, Bill Nye “The Science Guy” still keeps a very active schedule trying to convince adults that climate change is real. That involves debating wrestlers on Fox News and visiting the sites like Noah’s Ark replication where children are told the opposite.

It can get exhausting and it shows in David Alvarado and Jason Sussberg’s enjoyable documentary on Nye, premiering tonight on “POV” (PBS, 10 p.m., check local listings). It digs deeper into Nye’s family life and motivations and offers a ray of hope in what he’s inspired in others to date.

Climate change also gets the focus on a new “Nova” (PBS, 8 p.m., check local listings).

The dread sense of inevitability reaches the season finale of “The Looming Tower” (Hulu, streaming) which opens on the morning of Sept. 11, 2001 and Jeff Daniels’ character John O’Neill going to work at head of security at the World Trade Center.

“The Originals” (The CW, 9 p.m.) begins its fifth and final season, with Hope trying to bring her father back to New Orleans.

Elizabeth takes extreme measures to get close to a Soviet negotiator on “The Americans” (FX, 10 p.m.). At the same time, Matthew Rhys of that show co-stars in a new travelogues for tipplers, “The Wine Show” (Ovation, 10 p.m.) with Matthew Goode. First stop is Tuscany.

In a musical episode of “Riverdale” (The CW, 8 p.m.), they stage a school production of “Carrie: The Musical.”

The second episode of “America Inside Out with Katie Couric” (National Geographic, 10 p.m.) looks into the world of Muslim-Americans.

Sen fights for survival on “Krypton” (Syfy, 10 p.m.).

“Full Frontal with Samantha Bee” (TBS, 10:30 p.m.) confronts another week with too much news.

Acts fight over a producer on “Star” (Fox, 9 p.m.).

Lt. Benson runs into an old friend on “Law & Order: Special Victims Unit”(NBC, 9 p.m.) — it’s Stephanie March’s Alex Cabot.

A third third consecutive night of live playoffs on “The Voice” (NBC, 8 p.m.) leads to naming the Top 12.

They’re eating bugs again on “Survivor” (CBS, 8 p.m.).

Alexis’ work on a reality show isn’t earning her friends on “Famous in Love”(Freeform, 8 p.m.).

Tiana’s single takes off on “Empire” (Fox, 8 p.m.).

On the two-hour, 13th season finale of  “Criminal Minds” (CBS, 10 p.m.), an FBI agent is found locked inside a storage unit.

“Legendary Locations” (Travel, 10 p.m.) goes to Bolivia, French Guiana and Turkey.

“Sell It Like Serhant” (Bravo, 10 p.m.) gets involved in a waxing salon.

A winner is named on “Glam Masters” (Lifetime, 10 p.m.).

Jodie Sweetin, Christine Lakin and Beverly Mitchell return for season two of the comedy “Hollywood Darlings” (Pop, 8 p.m.), on which they play comedy versions of themselves.

It’s Blac Chyna vs. Jeremy Meeks on “Hip Hop Squares” (VH1, 10 p.m.), with  Yvonne Orji vs. Keith Powers at 10:30 p.m. Also featured are DJ Khaled, Tiffany Haddish and Teyena Taylor.

Michael J. Fox begins an arc on “Designated Survivor” (ABC, 10 p.m.).

Voight witnesses a kidnapping on “Chicago P.D.” (NBC, 10 p.m.).

“Catfish: The TV Show” (MTV, 10 p.m.) does some follow-up.

Turner Classic Movies’ Wednesday salute to director Michael Curtiz continues with “Romance on the High Seas” (6 a.m.), “My Dream is Yours” (8 a.m.), “Flamingo Road” (10 a.m.), “The Unsuspected” (noon), “This is the Army” (1:45 p.m.), “Captains of the Clouds” (4 p.m.), “Passage to Marseille” (6 p.m.), “Casablanca” (8 p.m.), “Mildred Pierce” (10 p.m.), “Yankee Doodle Dandy” (midnight), “Life With Father” (2:15 a.m.) and “The Sea Wolf” (4:30 a.m.).

NBA Playoffs have Indiana at Cleveland (TNT, 7 p.m.), Utah at Oklahoma City (NBA, 8 p.m.) and Minnesota at Houston (TNT, 9:30 p.m.).

Stanley Cup Playoffs have Pittsburgh at Philadelphia (NBC Sports, 7 p.m.), Tampa Bay at New Jersey (Golf, 7:30 p.m.), Nashville at Colorado (NBC Sports, 10 p.m.) and Anaheim at San Jose (Golf, 10:30 p.m.).

Baseball includes St. Louis at Cubs (MLB, 2 p.m.), White Sox at Oakland(MLB, 5 p.m.) and Cleveland vs. Minnesota (ESPN, 7 p.m.).

Daytime Talk

Kelly Ripa and Ryan Seacrest: Joel McHale, Letitia Wright. The View: James Comey. The Talk: Bill Hader, Henry Winkler, Adam Rodriguez, Derrick Levasseur. Harry Connick: Emily Wickersham. Steve Harvey: Jeffrey Wright, Morgan Stewart, Garcelle Beauvais, Malika Haqq. Ellen DeGeneres: Amy Schumer, Evan Rachel Wood, Bebe Rexha, Florida Georgia Line. Wendy Williams: Kate Walsh. The Real: Beverly Bond.

Late Talk

Stephen Colbert: Cynthia Nixon, Alan Cumming, Franz Ferdinand.  Jimmy Kimmel: Gwen Stefani, Josh Holloway, Dierks Bentley. Jimmy Fallon: Claire Danes, Letitia Wright, Kevin Delaney. Seth Meyers: Tyler Perry, Ben Mendelsohn, McKay Coppins, Lil John Roberts (rerun). James Corden: Christina Hendricks, Luke Hemsworth, Abigail Spencer, Aparna Nancheria. Carson Daly: Josh Radnor, Mimicking Birds, Tom Segura. Trevor Noah: Chelsea Clinton. Jordan Klepper: Alicia Menendez. Conan O’Brien: Joe Manganiello, Natasha Leggero, Benjamin Gibbard.