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Couple faces a defining moment as suspicions of infidelity lead to a pivotal polygraph test.

Quinisha says her husband, Gabron, is very controlling -- he fell into a hole financially and made her pawn her wedding ring against her wishes.

Elaine's boyfriend shows his support for a hockey team by painting his face and taunting opposing fans.

A pact with Jerry prompts George to offer former girlfriend Susan (Heidi Swedberg) a proposal; Elaine's sleep is interrupted by a barking dog.

The Dunphys travel to New York, while Mitch, Cam and Lily visit the Midwest, and Jay, Gloria, Manny and Joe go to Mexico; the family gets together for Father's Day.

News about dogs, including shows and current events; from the American Kennel Club.

Highlighting inspiring people who are making a difference across America.

F1 car; GT40; 50s Corvette; Oldsmobile; custom car.

Unique cars with interesting histories.

Learning about augmented reality, Chinese fossils and heart patches.

Breeding cheetah cubs in South Africa; rare African wild dogs.

Baby animals bring hope for the next generation of wildlife.

The largest monkeys in the world can only be found in Africa's equatorial rain forests.

Conservationists try many options to save the rhino from extinction.

Jack rides a submarine deep into the waters of Curaçao, rehabilitating coral reefs, diving with sharks and sea turtles.

Jack dives in with bottle-nosed dolphins; dolphin therapy for children.

Exploring some of the largest animals on the planet; bears in Yellowstone; elephants in Thailand; the great migration in Masai Mara Kenya; an encounter with friendly giraffes.

Jay wants to make a good impression on a family moving in across the street; Manny tries to attract a radical thinker; the Dunphy family uses Alex's bout of mono to its advantage; Cam and Mitchell try to teach a message of acceptance.

From Gerald J. Ford Stadium in Dallas.

From Fargodome in Fargo, N.D.

A pre-race lead-up to NASCAR racing.

NASCAR O'Reilly Auto Parts Series teams hit Las Vegas Motor Speedway for the Focused Health 302. Postseason stars fight across 301.5 miles, with defending series champion Jesse Love and Carson Kvapil managing pit strategy for crucial points.

From Snapdragon Stadium in San Diego.