The Octopus’s Secrets Nat Geo, commencing at 8:00 p.m.; Disney+ feeds commence on September 1 Brand-New Series! The most recent in executive producer James Cameron’s Earth Day natural history series for Nat Geo, which comes after Secrets of the Whales and Secrets of the Elephants, delves into the life of the octopus, one of the planet’s most alien-looking creatures. The three-part documentary, which features Paul Rudd as the narrator, debuts tonight and features amazing footage, some of which captures behavior never previously seen on film, showcasing the eight-armed animals’ ability to shapeshift as well as their intelligence and social skills.
GEICO 500 NASCAR Cup Series: FOX, 3 p.m. Live The 2.66-mile tri-oval Talladega Superspeedway in Alabama is the venue for the 188-lap NASCAR Cup Series GEICO 500 race. Acura Grand Prix of Long Beach, USA Network, NTT IndyCar Series, 3:30 p.m. Live The picturesque 1.968-mile, 11-turn temporary street circuit that encircles the Long Beach Convention Center is the venue for competition for drivers such as Scott Dixon, Scott McLaughlin, Pato O’Ward, Alex Palou, and other IndyCar luminaries.
The Horrible Truth MOVIES!, 7:30 p.m. Take in a Classic! Known as one of the most iconic screwball comedies ever made in the prime of the genre, this 1937 Best Picture Oscar nominee for Leo McCarey also won nominations for Best Actress for Irene Dunne and Best Supporting Actor for Ralph Bellamy. Even though he wasn’t nominated, costar Cary Grant is hilarious and endearing as ever in this story of Dunne and Grant, a couple who file for an amicable divorce but discover that it’s more difficult than they anticipated to part ways. “Meet Kenneth Guinup — ‘Weird Al’ Yankovic,” the collector calls. MeTV at 6:30 p.m. Kenneth Guinup is a collector who has been a lifelong admirer of “Weird Al” Yankovic.
Simpsons episode “Cremains of the Day” FOX, 8:00 p.m. In the newest episode “Cremains of the Day,” Homer (voiced by Dan Castellaneta) and the boys from Moe’s Tavern take a road trip to scatter the ashes after someone in their lives passes away. Dial the Midwife (8 p.m. on PBS). Two young brothers are left in a church while the student midwives study for their final test. Krapopolis: “Teach Yourself to See” FOX, 7:30 p.m. In the latest episode “Muse Your Illusion,” Krapopolis is beset by a plague of Muses. “Aurora” is the tracker. CBS, 7:00 p.m. Justin Hartley’s character Colter becomes involved in amateur ghost hunting and paranormal activities while looking for a young woman who vanished. The new episode “Aurora” is directed by and features a guest star, Jon Huertas from This Is Us.
Blue Carbon: The Unspoken Power of Nature CNN, 7:00 p.m. In search of natural remedies for a warming Earth, this documentary film sets out on a global quest. The immersive performance, which features Wu-Tang Clan’s RZA and stars Grammy-nominated DJ and marine toxicologist Jayda G, blends science and music into a passionate call to action to protect the environment. The “High Expectations Adventure” in the Great North FOX, starting at nine o’clock In the newest episode of “High Expectations Adventure,” Jenny Slate and Ariel Tweto’s characters, Judy and Kima, unintentionally become intoxicated while on a school field trip. A talking tub of cottage cheese named Beth then sends them on a quest to locate riches. PBS, 9 p.m.; Mr. Bates vs. the Post Office Toby Jones, Alan’s ally.
Grimsburg: “Little Betsy’s Big Trouble” FOX at nine thirty In the newest episode of “The Big Trouble With Lil’ Betsy,” a former child star is the main suspect in the murder of a TV morning show presenter. Vegas’s “Atomic City” in CSI CBS, ten o’clock In the newest episode “Atomic City,” the CSI team looks into a radioactive crime scene where a father and son perished. PBS’s Alice & Jack: Season Finale, 10 p.m. In the series finale, Jack (Domhnall Gleeson) and Alice (Andrea Riseborough), who have been romantically together for over ten years, encounter their biggest challenge.
