Watch I Am a Promise: The Children of Stanton Elementary School

Disney on the American plains, and the bison birth that got the film briefly banned in New York.

Two South Africans hunt for Rodriguez, a Detroit singer they think is dead.

A cyclist tries doping and stumbles into the Russian state programme; his source flees to LA.

A diver visits the same octopus every day for a year in a South African kelp forest.

Philippe Petit walks a wire between the Twin Towers in 1974, told as a heist.

Alex Honnold climbs El Capitan without a rope; you know he lives and it is still unbearable.

Robert McNamara's eleven lessons on Vietnam and Cuba; Errol Morris's Interrotron interview.

Eight hours on Simpson, race and Los Angeles; the documentary that won an Oscar as a film.