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Animal parents balance risk and reward to raise their young in grasslands; wild dogs must control their teen pups for survival; an expecting langur learns parenting skills by babysitting.

Scientists conduct the largest animal communication study in history to see if innovative word buttons truly enable dogs to talk.

Professor Mark Horton takes a journey across Britain to prove real events and places inspired the chivalric myths of King Arthur and the court of Camelot.

Archaeological evidence suggests that the legend of King Arthur began in a 5th-century trading village following the departure of the Romans.

Simple exercises to relieve a stiff, tense neck.

Eye strengthening; relaxing neck and shoulder tension; stretching.

A fusion yoga practice to work every part of the body also includes moments to slow down and connect with the heart, breath and stillness.

An intermediate yoga session with standing and seated poses to create more movement around the hips and hamstrings.

Keeping the glutes toned and strong can relieve back pain and prevent injury; working on feet and hip alignment; moving in ways to increase range of motion.

Two circulation routines make for a high energy and high-paced workout that works the fingers and uses the exercise band.

Emperor Hadrian's villa; wine and lakes of the Alban Hills; ancient seaport of Ostia; olive oil pressing; Rome's ring road.

Why country estates are named castles or abbeys; The Shambles; how the Quakers and chocolate shaped York's history; Herriot's country.

Observing the black-necked crane in the Phobjikha Valley; the annual Ngang Lhakhang "Swan Monastery" festival in Bumthang, Bhutan.

Visiting a lemur habitat; Roger paints a portrait of Sarah feeding grapes to the lemurs.

Underpainting the rabbit, then adding details to make the rabbit appear hidden; adding the final taller weeds; highlighting the grasses and snowdrifts.

The foundation of the house has no footings, so Mark McCullough pours a buttress; Kevin visits the 2001 Manchester by the Sea project; back at the house, Richard solves a ductwork puzzle while Kevin and Tommy install a PVC trim overhang.

Using rectangles and squares to make hold-it sacks for electronic devices, fabric bins for organizing and wall pockets with a decorator's touch.

Tuna bruschetta; lamb with heirloom tomato salad; pesto, string beans and potatoes.

Crispy fish sandwiches with tartar sauce; pepper mills; a horseradish tasting; handling extra fry oil; Rhode Island-style fried calamari.

Johanne Killeen and George Germon prepare dirty steak with hot fanny sauce; Christopher Gross builds a chocolate tower.

Italian-style vegan meatloaf; a side dish of cauliflower, potato and spinach; coconut-chocolate chip quick cake.

The role of women in Oaxaca and their influence on customs and cuisine; coloradito chicken; mashed potato cazuela; almond and chocolate leche cake.

Dry chili chicken; breaking down different miso; sour and hot Napa cabbage.

Aunt Jules' pie; Louisiana-style hot sauces; Gullah Lowcountry red rice.

Hot milk sponge cake; broken phyllo baklava cake; invisible apple cake.

Salmon's migration; a unique salmon coated with muddica; Sicilian roasted cauliflower linguine; a tribal leader demonstrates how Alaskan natives made salmon on cedar planks.

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

A master bodhran maker; dining aboard the Pullman Restaurant's historic train cars; walking the Cliffs of Moher; sharing music with Franjo Reid and Pat Sweeney.

Emmy Award-winning host John McGivern showcases great American main streets from interesting communities all over the Midwest.

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

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.

Tristan settles into life back at Skeldale; Mrs. Hall sends the boys to Pumphrey Manor.

Carmody gains an opportunity; Mrs. Hall and Mr. Bosworth clash over a warden task.

Twenty-four hours a day, the latest national and international stories as they break.

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

A scrap of metallic Mylar could be part of an early U.S. satellite; Andy Warhol's artwork could be on the moon; possible prototype for a NASA space boot.