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New evidence sheds lights on the life and mysterious collapse of Cambodia's ancient jungle city.

Experts combine history, archaeology and forensic investigation into a quest to prove women fought alongside men in Rome's ancient amphitheaters.

The engineering secrets of six structures that changed the face of warfare.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.

Grilled striped bass with olive topping; two ways to shuck clams; clams with vinegar and scallion sauce; linguine with clam sauce; cod in light cream sauce.

Christopher Kimball demonstrates a bolder yet simpler way of preparing food.

Scientists and filmmakers explore the icy waters of Antarctica to observe how killer whales hunt.

New evidence sheds lights on the life and mysterious collapse of Cambodia's ancient jungle city.

Experts combine history, archaeology and forensic investigation into a quest to prove women fought alongside men in Rome's ancient amphitheaters.

The engineering secrets of six structures that changed the face of warfare.

Binky spends the day with Bitzi Baxter and finds out what it is like being a news reporter; D.W., Bud and Rapty revisit the case of the missing snowball.

Aarti Craft turns all the agents in Chicago into paper dolls except for two, Oxford and Osalind, who avoid her powers and join the Mobile Unit to stop Aarti for good.

While investigating exoskeletons, the hercules beetle accidentally gets enlarged.

After a groundhog predicts more winter weather, Benny is convinced he will have snow on his birthday so he plans a snow-filled birthday party.

Lyla and a new friend build a spaceship; Lyla learns her sisters can predict what the other wants, so she tries to do the same with Luke.

Carl and Sheldon are on a thank you mission; Carl shows his friends the right way to play with pet rocks.

Teddy is nervous for a boat ride on Trolley.

The Fuentes kids make a fort in the living room but disagree about what to put in it; Rosie and Javi build a car for a derby race.

After looking at the moon through Yasmine's telescope, Tamir, Elmo and Zoe pretend to be astronauts traveling to the moon.

The Wombats build a Cause and Effect machine; Super's best friend Chanaa pays a visit.

The pals and Trolley try to keep a snow snurdle from melting; Panda invites his pals to a party on Planet Purple.

Gertie helps Pinkalicious find her inner courage when it comes time to learn a new move in karate class; the school experiments with googly eyes.

Elinor finds what she thinks is a fish in the pond, but she and her friends realize it's a tadpole turning into a frog; Elinor, Ari and Olive make up a dance.

Papi is called to rescue a cow on the loose in the Bronx; Lucas gets upset after Alma, Eddie and Lauren copy his new hairstyle.

Xavier travels to meet his heroes Christopher Reeve, Kitty O'Neil, Oprah Winfrey and his great great grandfather.

Installing a warm roof; new framing poses plumbing challenges; rot is discovered on the original sill; exploring options to light the new ell.

Live news program produced out of BBC's Washington, D.C. bureau; host Sumi Somaskanda.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day, along with news-making interviews and analysis from BBC correspondents around the globe.

Live news program produced out of BBC's Washington, D.C. bureau; host Sumi Somaskanda.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Honey-glazed pork shoulder; exploring the world of sheep milk cheese; the Welsh tradition of celebrating the leek; creamy potatoes and leeks.

Regular Bay Area residents review and talk about their favorite restaurants.

The team retrieves a patient with Down syndrome; Mira questions her place in Wayne's life; one of the team will be forced to leave the RFDS.

A missing persons case turns to murder as Frank and Lu investigate the disappearance of an Eastern European oligarch.

Frank and Lu investigate a series of "accidents" on a psychic television program hosted by two warring sisters.