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Experts analyze prominent international affairs topics and America's role in a shifting world.

Exploring at what level of the hierarchy of life -- from genes to individuals to groups to species -- the evolution occurs.

Elizabeth I's image as a warrior queen, facilitated by myths and secrets about her victory over the Spanish Armada, shaped British national identity for centuries.

Everything comes to a head as Richard and Jim descend on Bayview; the family tries to heal and reconnect; the fallout from Mary's actions continues to reverberate.

When the Titanic goes down, Lord Grantham loses his heirs, and Mary loses her fiance.

Writers Winnie Holzman and Dana Fox talk about their process of writing "Wicked" and "Wicked: For Good.".

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.

Rock musician Annie DiRusso delivers a sound that's equal parts grunge grit and indie heart with fuzzy guitars, sharp lyricism and raw emotional fire.

A woman born in Vietnam searches for her American father; a man hopes to find the Texas cowboy who saved him when he was a child.

Elizabeth I's image as a warrior queen, facilitated by myths and secrets about her victory over the Spanish Armada, shaped British national identity for centuries.

Everything comes to a head as Richard and Jim descend on Bayview; the family tries to heal and reconnect; the fallout from Mary's actions continues to reverberate.

When the Titanic goes down, Lord Grantham loses his heirs, and Mary loses her fiance.

Writers Winnie Holzman and Dana Fox talk about their process of writing "Wicked" and "Wicked: For Good.".

Jamie Chung, Cyndi Lauper and Danny Trejo retrace the journeys of their immigrant ancestors.

An easy-to-follow standing and barre workout helps relieve tension in the lower back with posture and hip isolation exercises.

Seated sun salutations and gentle stretches designed to increase flexibility and mobility in the shoulders, back, hips, legs and more.

Chefs at six popular restaurants in the Palm Beaches demonstrate their favorite recipes -- key lime pie, tres leches cake, honey cake, chocolate souffle, gulab jamun and cheesecake.

Brecon Beacons National Park; Pembrokeshire Coast National Park; St. Davids; Hay-on-Wye; Victorian seaside resort town of Tenby.

Exploring the Nile Valley from north to south, including the fabled city of Alexandria; pharaohs' tombs and temples in Luxor, Egypt; a riverboat cruise; Ramesses II's temple at Abu Simbel.

Garlic and pasilla soup; chicken with chili sauce and achiote rice; banana gratin.

Unique spots where food and art connect; Ceramica Suro supplies dishware and textiles to restaurants in Mexico and the U.S.; chefs Poncho Cadena and Fernanda Covarrubias create artistic, colorful dishes.

Crab cakes with lemon vinaigrette; baked Louisiana oyster casserole; pillowcase cookies.

Firefly lifestyle; a renter charms up a neglected front yard; sprout Texas mountain laurel seeds.

Lemony quinoa salad with fresh herbs, including basil, parsley, chickpeas, and a lemon dressing; summer peaches and lemon "cream" tart featuring a crisp pecan-oat pie crust; maple lemonade.

Stretches to strengthen the back and improve posture.

Using a ball to test reaction time.

Elizabeth I's image as a warrior queen, facilitated by myths and secrets about her victory over the Spanish Armada, shaped British national identity for centuries.

Everything comes to a head as Richard and Jim descend on Bayview; the family tries to heal and reconnect; the fallout from Mary's actions continues to reverberate.

When the Titanic goes down, Lord Grantham loses his heirs, and Mary loses her fiance.

Wyoming's Medicine Bow Ranch; Western artist Morgan Weistling; the historic home, polo field and California State Park left by Will Rogers.

Farm Stay vacations give city children a chance to discover rural America; a special recipe for pasta; a Wisconsin dairy farm turns cow manure into an energy source.

Day trips around Texas.

Trail runners; Seminole Canyon State Park; wild hog cook-off.

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.

A journey of life, love, loss and redemption with the L.A. Harvard School class of 1974.

Veterans who fought in Iraq and Afghanistan share personal stories from their deployments and ponder the cost of these wars on veterans and civilians.

Finds include a 1961 JFK Santa Claus Letter, a 1979 Ed Ruscha Stage Fright ink on paper and a John Juzek violin circa 1950.

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