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Qualifying races for this week's NASCAR O'Reilly Auto Parts Series event in Iowa.

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Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

Cut up to half the cost of your monthly cell phone bill; same towers, same coverage, but a lot less money; it sounds great but is it too good to be true?; join myth-busting legend Kari Byron as she takes on Big Wireless to save you money.

Personal habits clash when Ross moves in with Chandler and Joey; Phoebe dates a health inspector (Gregory Sporleder); Rachel schemes to get her new neighbor to ask her out on a date.

As the gang digests Monica's huge Thanksgiving meal, everyone reminisces about their worst Thanksgiving ever.

Ross becomes upset when someone at work takes his sandwich from the refrigerator and eats it; Joey finds himself in a mess when he tries to cover for Chandler and Monica's dating.

A pre-race lead-up to NASCAR racing.

NASCAR series drivers tackle the 0.875-mile asphalt oval of Iowa Speedway in the HyVee Perks 250. Competitors manage heavy short-track traffic and progressive banking over 250 laps, fighting to secure a key victory in Newton, Iowa.

From Dallas.

From Amerant Bank Arena in Sunrise, Fla.

Wolowitz questions his engineering skills after he and Sheldon can't get a toy drone to fly; a canceled flight puts Leonard's plans in jeopardy; Raj sets his parents against one another after he's cut off financially.

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Stay informed with the latest breaking news and headlines.

Monica learns what her parents have done with her wedding fund; Joey teases Rachel about her late-night reading material.

For the first time in nine years, the gang celebrates Sheldon's birthday -- surprising him with a special guest.

Leonard, Sheldon and Wolowitz file for a patent on their new invention; Penny, Amy and Bernadette give dating advice to Koothrappali after his breakup with Emily.

Bev experiences moments of clarity and reflection and asks Jackie to spend the day together in Chicago; Darlene finds a rat in her home but refuses to let Ben kill it.

Learn what's behind mental decline with age, and how to improve memory, focus and concentration with NeuroQ's Darrin Peterson and Dale Bredesen MD.

Paid programming.

Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

Back Pain? Hip? Sleep well thanks to this cooling topper!

Jackie faces problems at the Lunch Box and must take advice from an unexpected guest; Dan and Darlene take a trip into Chicago.

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Stay informed with the latest breaking news and headlines.

Stay informed with the latest breaking news and headlines.

Stay informed with the latest breaking news and headlines.

Team rodeo action from Freedom Days in Sunrise, Fla.

While facing dramatic changes in his relationship with Amy, Sheldon pushes Penny and Leonard to choose a wedding date.

Sheldon struggles to understand what is going on with Amy; Penny must decide if she can get past Leonard's bad behavior.

Jack heads into Costa Rica's jungles looking for bats; an encounter with a Fer-de-lance viper; a dog that can sniff out a rare species of pit viper.

Jack takes his grandson on a Serengeti safari; a cheetah and a lion on the Savannah; wildebeest and zebra start their annual migration.

Ecuador's diverse landscapes are home to loads of unique creatures; the Mashpi cloud forests, home to hummingbirds and bushmasters; birds of prey in flight near Otavalo's colorful markets; the Quito Zoo welcomes a baby jaguar.

Jack joins a mission to save an elephant caught in a deadly snare; the lives of lions and leopards on the savannah.

Leonard tries to ease Penny's mind; Sheldon plans a special episode of "Fun With Flags"; Bernadette feels bad about keeping a secret.

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Stay informed with the latest breaking news and headlines.

Stay informed with the latest breaking news and headlines.

Earth's billions of inhabitants are unaware that the planet has an expiration date. With the warnings of an American scientist (Chiwetel Ejiofor), world leaders begin secret preparations for the survival of select members of society. When the global cataclysm finally occurs, failed writer Jackson Curtis (John Cusack) tries to lead his family to safety as the world starts falling apart.