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How discoveries over the past 50 years have revolutionized people's understanding of the universe.

From Kenya to Mexico, people and wildlife find a harmonious balance in Earth's most vulnerable landscapes.

Those working on the frontline of change examine how science, nature and tradition prepare the world for a rapidly evolving future as the planet heats up.

Technology in the garden involving production and plants, unique hybridized color creation in flowers and innovations in packaging and transportation.

Rick Steves offers practical advice on how to have a fun and affordable trip to Europe. Sites include Germany, Italy, the Swiss Alps, Paris and London.

Asanas designed to cure headaches by relieving tension and correcting poor posture.

Exercises to strengthen one's core and full body.

Martin encounters a lost colony of black-footed ferrets.

Corky is selected to make a presentation at school during a science day celebration, but humidity jeopardizes her project.

Lyla figures out how to do a magic trick with clues from Miss Emmaline; Luke finds a puppy.

Arugula and Carl go on an adventure as archaeologists; Carl spots a UFO on Mother's Day.

Things don't go as planned when Daniel and Dad Tiger spend the day together; Daniel and Mom's day together includes turning her old wagon into a trolley.

Jay and Lupe use wayfinding signs to track down Phoebe; Pete and Craig face an epic hoops battle on the courts.

Rudy feels angry when Abby asks him to share his toys, so his friends make a movie to show that sharing can be fun.

Rosie and Javi get a new book, but it's in a different language; Rosie tries to form a club with her friends.

Ari grows impatient waiting for ketchup; Elinor, Olive and Ari have to figure out how to expand their clubhouse to fit all the new members of The Explorer's Club.

Rosie and Javi get a new book, but it's in a different language; Rosie tries to form a club with her friends.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

The team witnesses a baby boom in the Delta; lioness Matho protects her cubs while the leopard Xudum reveals her newborns as danger looms nearby.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a threat.

Set in Antarctica's Dry Valleys, Antarctica's glacial and icy ecosystems reveal how frozen landscapes can sustain surprising life forms.

Service dogs bring happiness and a feeling of safety to veterans with PTSD.

Chronicling Jason LaClair's journey from opioid addiction to becoming an acclaimed Coast Salish artist; the film also highlights LaClair's restoration of a story pole that was started by an elder in his community.

Coverage from Washington, D.C. and London, with a regular panel of guests from across the political spectrum discussing the biggest stories of the day.

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 group of seniors attempts to break a skydiving world record; these "golden flyers" over the age of 60 jump out of planes at 10,000 feet and along the way, build camaraderie and spiritual connections transcending the limit of age.

International competition footage, home videos and original cinematography illustrate the struggles, victories and journeys of Montana's freestyle skiers.