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Investigating explosions in Siberia and other evidence that melting soil in the Arctic is releasing vast amounts of methane, a potent greenhouse gas.

Survivors race to rebuild stronger one year after the wildfires in LA.

A woman finds herself on a transformative journey as she nurtures wounded hummingbirds amid the glamour of Hollywood.

Strengthing abs, thighs and back muscles.

A full-body relaxation workout that stretches and strengthens feet and calves.

The kids try to locate a missing Srta. Tapir at a music festival by listening for her drums; the kids try to track down a bird thief.

Daisy gets ready for the Animal Science Fair.

Molly faces big obstacles while training for a cross-country ski race; Molly and her family lose their lunch when a seal sneaks onto their boat and steals their food during a fishing trip.

Muffy helps Francine deal with the death of her Bubbe; Arthur and Buster try to make the family vacation more exciting.

Agents talk about how gadgets helped them; someone with an odd problem visits headquarters.

Sloth bears have unique powers, including the ability to harness the power of suction to acquire food.

The Hunters search for a way to monitor the weather after they lose power during a thunderstorm.

Everett faces his fear of water by taking a swimming lesson; Lyla doesn't want Miss Emmaline to move.

Carl makes a new friend while visiting his dad; Lotta thinks if she copies Nico, everyone will like her.

Daniel is excited to share his book at show and tell; Daniel and Katerina have a tough time waiting at a restaurant.

Rosie, Javi and Uncle Steve use landmarks to get to Calvin's bakery; Rosie, Iggy and Javi lose their Easter eggs.

Nina and Abby help Rudy feel less scared about going to the doctor; Tango runs away from Elmo at bath time.

Fergus plans an epic anniversary date for Felicia; the Fishmans want to put on an underwater circus act for the Treeborhood.

Daniel is excited to share his book at show and tell; Daniel and Katerina have a tough time waiting at a restaurant.

Muffy helps Francine deal with the death of her Bubbe; Arthur and Buster try to make the family vacation more exciting.

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.

The old details of the home are respected; new porch columns are made to match the old; a bathroom gets a concrete-like finish; installing a reclaimed front door; visiting Dr. Martin Luther King Jr.'s birth home.

A Civil War presentation sword and portrait; Danny Lyon Civil Rights posters; a copy of "The First Men in the Moon" signed by Neil Armstrong.

The death of a hotel owner leads to murder and intrigue.

The death of a hotel owner leads to murder and intrigue.

Lucy Worsley investigates whether Mary I, England's first ruling female monarch, should be remembered as a pioneer or a tyrant.

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.

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

A desert island survival course goes wrong when the leader, a trained survival expert and ex-SAS soldier, is found dead in the forest of a remote island near Saint Marie.

The lead actor in a new movie is murdered on set.

Jane is reluctant to join the task force; Jane receives a troubling letter; a violent act occurs in Jane and Ben's driveway.

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

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

A desert island survival course goes wrong when the leader, a trained survival expert and ex-SAS soldier, is found dead in the forest of a remote island near Saint Marie.