Your Earth Day cautionary tale is Love Canal, one of the biggest environmental and public health disasters in U.S. history. The case, which led to the formation of the federal Superfund program, is reviewed on a new “American Experience” (PBS, 9 p.m., check local listings).

There’s a pair of feline-minded new nature documentaries. “Tiger” (Disney+, streaming), about a tigress in India, narrated by Priyanka Chopra Jonas. “Tigers on the Rise” (Disney+, streaming), is about how tiger populations have rebounded. It’s narrated by Blair Underwood.

The new spinoff “The Proof is Out There; Military Mysteries” (History, 10 p.m.) looks at weird stories that arose during wartime. 

Further exploitation of the superobsese is offered in the unflattering new series “Quarter Ton Teen” (A&E, 9 p.m.). 

“Ugliest House in America” (HGTV, 9 p.m.) returns for a new season, this time in the Midwest. 

There’s a pancake challenge on “MasterChef Junior” (Fox, 8 p.m.). 

“The Voice” (NBC, 8 p.m.) holds the playoffs in advance of the live shows.

Asher struggles after a tough decision on “All American” (CW, 8 p.m.).

“The Neighborhood” (CBS, 8 p.m.) throws a baby shower. 

The top eight get Broadway challenges on “So You Think You Can Dance” (Fox, 9 p.m.). 

“NCIS” (CBS, 9 p.m.) looks into the kidnapping and death of a heart surgeon, before a new episode of “NCIS: Hawai’i” (CBS, 10 p.m.). 

Meghan Trainor is guest mentor as the Top 12 sing their favorite Hollywood songs on “American Idol” (ABC, 8 p.m.) before the Top 10 are picked.

A New York trip is in the cards for “Bob Hearts Abishola” (CBS, 8:30 p.m.). 

“Contraband: Seized at the Border” (Discovery, 9 p.m.) finds cocaine hidden in a truck. 

The King and Queen continue to tax the interior and the galley on “Below Deck” (Bravo, 9 p.m.). 

“Spring Baking Championship” (Food, 8 p.m.) has to make music festival cupcake crowns. 

A report on an abduction rattles the organization on “The Synanon Fix: Did the Cure Become a Cult?” HBO, 9 p.m.). 

“Super Reefs” (National Geographic, 10 p.m.) shows that some coral is recovering. 

The ship is sabotaged on “Star Trek: Discovery” (Showtime, 8 p.m.). 

On “The Impact: Atlanta” (VH1, 8 p.m.), Ari considers a move to Miami. 

Turner Classic Movies continues to mark the 100th anniversary of MGM with their movies from the 50s through 70s all day with “Forbidden Planet” (6 a.m.), “Cimarron” (7:45 a.m.), “Doctor Zhivago” (10:15 a.m.), “Ice Station Zebra” (1:45 p.m.), “Viva Las Vegas” (4:30 p.m.), “The Cincinnati Kid” (6 p.m.), “How the West Was Won” (8 p.m.), “2001: A Space Odyssey” (11 p.m.), “Shaft” (1:45 a.m.) and “Network” (3:45 a.m.). 

NBA Playoffs have Orlando at Cleveland (NBA, 7 p.m.), Philadelphia at New York (TNT, 7:30 p.m.) and Lakers at Denver (TNT, 10 p.m.). 

Stanley Cup Playoffs have Toronto at Boston (ESPN, 7 p.m.), New York at Carolina (ESPN2, 7:30 p.m.), Vegas at Dallas (ESPN, 9:30 p.m.) and Los Angeles at Edmonton (ESPN2, 10 p.m.). 

Baseball has White Sox at Minnesota (Fox Sports 1, 7:30 p.m.).

Daytime Talk

Kelly Ripa and Mark Consuelos: Hiroyuki Sanada, Ashlee Piper. The View: Jennifer Lopez. The Talk: Jerrod Carmichael, Tabitha Brown. Drew Barrymore: Danny Seo, Christina Ferrare. Kelly Clarkson: Tracy Morgan, Hiroyuki Sanada, Anna Sawai. Jennifer Hudson: George Lopez, Golda Roseuvel. Tamron Hall: Devale and Khadeen Ellis, Zibby Owens, Digable Planets.

Late Talk

Stephen Colbert: Christiana Amanapour, Wilmer Valderrama, Tony Hawk (rerun). Jimmy Kimmel: Kim Kardashian, Ramon Rodriguez, Real Estate. Jimmy Fallon: Kelly Clarkson, Peyton Manning, Mike Tirico, Carrie Coon, Katherine Blanford (rerun). Seth Meyers: Peter Dinklage, Rory Scovel (rerun). Taylor Tomlinson: Caitlin Reilly, Gillian Jacobs, Pete Holmes. Daily Show: Jon Stewart.