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Bloomberg reporter Katrina Manson, author of "Project Maven: A Marine Colonel, His Team, and the Dawn of AI Warfare," joins Ian Bremmer to discuss the promises and pitfalls of AI on the battlefield.

The Corcoran Group founder Barbara Corcoran talks about her journey, struggles and successes in real estate and how she's made a career of "spotting success" on "Shark Tank.".

Exploring the family trees of musicians Lizzo and Flea.

A trendy organic bakery causes resentment among villagers; several people are dosed with a dangerous hallucinogenic.

A trendy organic bakery causes resentment among villagers; several people are dosed with a dangerous hallucinogenic.

Humphrey investigates the death of an unidentified man found in the center of a crop circle.

Suspicions grow after a wife is murdered a year after her husband. The Countess and Hannes are offended by Lukas and Nina.

The host visits various California neighborhoods.

Daniel gets mad when he doesn't get a crayon box right away at the Crayon Factory.

Phoebe learns what privacy signs are and how to use them to communicate to neighbors; Jay gets nervous about getting a haircut.

Special exercises for the feet using a small ball for sensory stimulation; a balance and stretch segment; patriotic music sets an upbeat tone for seated stretching exercises using a towel.

Exercises that tone the entire body.

Easy bright and bold blocks.

Incorporating the vacation style and mindset into everyday life.

Richard revisits a homeowner to repair a water heater he thought was fixed four years ago; Tom installs a storm door with a dog in mind; Ross Trethewey looks at voice-activated smart devices.

The team builds a roll-around air cleaner with an adjustable fan and a large filter designed to clear the air in a shop.

Porridge with pinnekjott, a holiday dish made with salted and dried goat ribs and served with almond potatoes; pork ribs cooked twice.

Bay Area kids share their favorite eateries: Kura Revolving Sushi (Cupertino), Agrodolce Osteria (Berkeley), Burmatown (Corte Madera).

Spiral sliced ham glazed with cider vinegar caramel; mandolines; the science of sound and texture; Spanish potatoes with olive oil and wine.

Pennsylvania Dutch apple pie; vanilla ice cream; Amish cinnamon bread.

Pastry chef Norman Love prepares savory puffs, salmon mousse eclairs and marscapone vegetable medley.

Shaved artichoke, spinach and mortadella salad; mussels, sausage and potatoes in white wine.

Japanese food available at Tokyo's iconic market, from seafood to produce.

Hosts Yu Hayami and Patrick Harlan, with the help of Japanese chefs Tatsuo Saito and Rika Yukimasa, introduce Americans to the techniques, ingredients and harmony of Japanese cuisine.

The Filipino community in Seattle, including Filipino-American chefs and their influence on the city's food scene.

Green Bay Packers salesman's sample championship rings; Barbie dolls and wardrobe circa 1960; a 1977 Keith Haring Bean Salad lithograph.

The costs of anti-immigrant discourse and the fortitude of families who, despite great odds, continue to envision a better future for their children.

Following nature's rhythms from fireflies at dusk to cicadas emerging after years underground; in the prairie, pollinators keep wildflowers blooming while ancient rocks shelter microorganisms and preserve echoes of vanished seas.

How visitors in the Palm Beaches restore energy and spirit through golf, pickleball, spas and walks on the sand.

The host visits various California neighborhoods.

Rick Steves takes a look at the sights outside of Amsterdam, from Haarlem, to Rotterdam, Delft and Zuiderzee.

Lacy architecture and ethereal paintings by El Greco in Spain and Portugal; in Germany and Belgium, technologies enable Durer's mass-produced engravings, Jan van Eyck's oil paintings, Brueghel's peasants at play and the futuristic visions of Bosch.

The heritage and cuisine of the Mexican community in Chicago; tacos de cecina; grilled nopales; the secrets of mole sauce.

A French explorer makes an unprecedented discovery in Alexandria's harbor that could reveal new information about Cleopatra's reign and her connection with the goddess Isis.

Three codebreakers succeed in decoding 57 encrypted letters from Mary, Queen of Scots, detailing efforts to free herself from imprisonment.