TV top picks

7 p.m. on PBS NOVA

With a new Jurassic Park movie on the horizon, the new episode “Day the Dinosaurs Died” is somewhat timely ... though the time it deals with is, obviously, the prehistoric era. The program examines how the collision of an asteroid into Earth ended the existences of many creatures 66 million years ago. Scientists examine the resulting crater.

7 p.m. on CW EA Madden NFL 18 Challenge

The CW has recognized the gaming culture fairly regularly with specials, and this new one is another example. It follows the eight players who made the finals of the competition inspired by the Madden NFL 18 video game — named for legendary NFL coach turned sportscaster John Madden — as the event was staged in Los Angeles recently. A total prize of $150,000 was available, and the skills shown here determined which players ended up getting which amount of that award.

8 p.m. on HIST Knightfall

Landry (Tom Cullen, pictured) receives the help of a somewhat unlikely guide — a pagan, no less — as he searches his past in a new episode called “He Who Discovers His Own Self, Discovers God.” Elsewhere, Gawain (Padraic Delaney) pursues a murder investigation, and Princess Isabella (Sabrina Bartlett) suffers a cruel betrayal. Simon Merrells and Olivia Ross also star.