All times eastern.

• 6PM, History Channel - Modern Marvels: Snackfood Tech. Potato chips; candy bars; Twinkies; chocolates.
• 6PM, National Geographic - Naked Science: Prehistoric Americans
• 6PM, Science Channel - Galapagos: Beyond Darwin: Advanced scientific equipment yields new discoveries of marine and terrestrial life on the Galapagos archipelago.
• 6PM, G4 - Ninja Warrior: Sasuke 9: Part 1
• 6PM, Discovery HD - Miracle Planet: Snowball Earth. Scientists hypothesize that changes caused by the Ice Ages allowed microbial life to evolve and become more complex.
• 6:30PM, G4 - Ninja Warrior: Sasuke 9: Part 2
• 7PM, Food Network - Good Eats: Fowl Territory. Preparing game.
• 7PM, National Geographic - Engineering the Impossible: Chartres Cathedral. The builders of the Chartres Cathedral push technology to the limit to come up with solutions that still influence modern design and construction techniques.
• 7PM, Versus - Legends of the Ring: Foreman vs. Morrison - 06/07/93 Foreman and Morrison battle it out for the vacant WBO title, from June 7, 1993.
• 7PM, SundanceHD (NY 740) - Big Ideas for a Small Planet: Eat. A chef shows off his new green restaurant, where even his roof doubles as a produce garden; a burger restaurant uses sustainable meat and produce; a young entrepreneur finds treasure in another man’s trash.

The rest of 7PM and on after the jump!

• 7PM, Discovery HD - Valley of the T-Rex: A paleontologist questions theories about the tyrannosaur when he finds five specimens in Montana.
• 7:30PM, SundanceHD (NY 740) - Big Ideas for a Small Planet: Drive. The debut of an electric sports car of the future; brightly colored affordable electric commuter cars; a high-school team works on their electric vehicle prior to competition in a variety of road rallies.
• 8PM, Science Channel - Ants! Nature’s Secret Power: Ants live in a fascinating world of coded communication and chains of command.
• 8PM, Fuse - Tattoo Stories: More and more people are using their bodies as a canvas for storytelling.
• 8PM, Discovery HD - Planet Earth: Shallow Seas. A humpback whale and her calf; pygmy seahorses; seals attack king penguins.
• 8PM, Discovery Channel - Dirty Jobs: Snake Researcher. Water snakes; bait and lobster fishermen in Maine; seaweed trimming.
• 9PM, PBS (NY 13) - Great Old Amusement Parks: Early theme-parks and rides in the United States.
• 9PM, History Channel - Boneyard: Automobiles. The boneyard crushes, shreds and recycles automobiles.
• 9PM, National Geographic - Ultimate Factories: Ferrari. Inside the Ferrari automobile factory.
• 9PM, Sundance - John Safran vs God: Mormon underwear; Australian soccer team curse; biblical code.
• 9:30PM, Comedy Central - South Park: Mr. Hankey, the Christmas Poo Town denizens try for a politically correct Christmas; Kyle’s pal Mr. Hankey arrives. (A classic!)
• 10PM, Discovery HD - Borneo’s Pygmy Elephants: Campaign to save the Pygmy Elephant.
• 10PM, Science Channel - How Do They Do It?: Fixing the mast on top of the Empire State Building; extracting copper from the largest man-made hole.
• 10PM, National Geographic - Ultimate Factories: John Deere. Deere & Co. in Moline, Ill., manufactures some of agriculture’s most vital machines.
• 10PM, PBS (NY 750) - American Experience: Race to the Moon. The Dec. 24, 1968, Apollo 8 lunar orbit marks the first manned mission to the moon and the first live TV coverage of the lunar surface.
• 10:30PM, Science Channel - How Do They Do It?: Blasting a shuttle into space; the world’s twistiest roller-coaster; turning rock into a pool table.
• 10:30PM, Speed - Car Crazy: North American International Auto Show. How the car hobby affects new car performance, horsepower and design.