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Stay informed with the latest breaking news and headlines.

Monica makes Chandler apologize to an old girlfriend (Stacy Galina) for leaving her because she was fat; Monica struggles to select a maid of honor.

The group struggles through an awkward morning after Sheldon's mother and Leonard's father spend an evening together; Penny's family arrives.

Wolowitz has a meeting with Colonel Williams, a representative from the Air Force Department of Material Command.

Dan achieves a major financial milestone, making him reconsider his belief in the Conners' curse; Mark finds out some news that causes him to reevaluate his future.

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

Paid programming.

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.

Mark takes on odd jobs, determined to find a way to pay for school; Darlene grapples with her emotions when she discovers her household is about to change dramatically.

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.

Stay informed with the latest breaking news and headlines.

From Chicago.

From Thunder Ridge Nature Arena in Ridgedale, Mo.

Howard and Bernadette struggle to leave Halley in day care; Bert introduces the gang to his new girlfriend, Rebecca.

Mandrills; gorillas; sea turtles; elephants; pristine landscapes.

Marine iguanas; sea lions; Sally Lightfoot crabs.

Hummingbirds, bats, snakes and butterflies in the mystical Mashpi cloud forest of Ecuador.

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.

A driver leads officers on a lengthy pursuit; a felony warrant stop interrupts two young lovers; one officer acts quickly to save a man from overdosing.

On an island research facility, Dr. Susan McAlester is harvesting the brain tissue of DNA-altered sharks as a possible cure for Alzheimer's disease. When the facility's backers send an executive to investigate the experiments, a routine procedure goes awry and a shark starts attacking the researchers. Now, with sharks outnumbering their human captors, McAlester and her team must figure out a way t