1) “The Lion” opener, 9 and 10 p.m., National Geographic. Brilliantly crafted, this is an epic two-week, four-hour documentary. Jon Favreau, who directed the non-cartoon “Lion King,” produced it; Hans Zimmer — who won an Oscar for the animated “Lion King” — did the music. (The photo here is not from the film, however.) For four years, a crew got great footage of a young cub’s rise to power.
2) “America’s Got Talent,” 8-9 p.m., NBC. On Tuesday, the live episodes began; 11 acts performed and viewers voted. Now we learn which acts go the the semi-finals on Sept. 15. Also, the K-pop group NCT 127 performs.
3) “Resolve to Solve” opener, 10 p.m., PBS. Key figures in the climate-change struggle are (really) beavers and cows. The ones eagerly build dams that rescue rivers; the others burp … creating a methane-gas problem that science is learning to modify. Miles O’Brien finds immense skill in the beavers and reassuring optimism and idealism among the scientists working with them.
4) “Abbott Elementary,” 9-11 p.m., ABC. The sixth season starts Oct. 7, but here are the four episodes that led into the fifth-season finale. There’s April Fool’s Day … then Melissa’s most successful students return … then a night out for Janine and Gregory … and then the annual Ava Fest.
5) “Gone With the Wind” (1939), 8 p.m. to midnight, Turner Classic Movies. Vivien Leigh’s two Academy Awards came in opposite films. This one and “A Streetcar Named Desire” (which TCM airs Thursday) are steeped in Southern despair, but “Wind” encases it in beauty and elegance.