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The crucial ecological roles that beetles play in nearly every environment, and why they are often regarded "the most important species on the planet.".

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

A chameleon searches for a mate in Madagascar; a Scottish water vole swims a lake, climbs a waterfall and scales a mountain to find a place to raise her pups.

Four members of the Artemis II crew embark on a perilous 10-day journey to orbit the moon.

The crucial ecological roles that beetles play in nearly every environment, and why they are often regarded "the most important species on the planet.".

Daniel and Grandpere hunt for buried treasure; Grandpere takes Daniel on a sunrise boat ride before the family heads back home.

Tobey sets his robots on a candy-stealing spree, vowing to ruin Halloween; Chuck and Whammer attempt to steal Henry VIII artifacts.

Red doesn't know why her new puppy is whimpering and whining.

Sydney, Sean and Mindy plan fun things for Jet's first Halloween, including carving jack-o'-lanterns, dressing up in costumes and going trick-or-treating; Carrot and Celery turn their garage into a haunted house.

Peg and Cat use a diagram to find their way out of a prehistoric forest; Peg and Cat help Ludwig van Beethoven write a symphony.

Red doesn't know why her new puppy is whimpering and whining.

Arthur, D.W. and Buster build sand castles at the beach; Buster goes out of his way to avoid germs.

Ms. O and her team are determined to win a Jackie Award; Ms. O and Oscar accidentally switch bodies.

The Kratt brothers take a day off from adventuring to go camping, where they meet a mischievous little moose calf.

The Hunters investigate a weather mystery surrounding massive rocks that move on their own in the desert.

The Loops celebrate the day they met Stu; Liana finds crumbs on Louisa's pillow and accuses her of taking the last cookie.

Carl loves the new sweater his Pop Pop knit him, but it feels itchy when he wears it; Carl is nervous about his new school bus stop.

After Miss Elaina loses her mitten, her mom teaches her how to put things away so she can find them later; Prince Wednesday loses his comic book.

Phoebe and Jay use Miss Jean's field guide to identify their new butterfly friend; Phoebe gets courage to perform at the talent show.

Elmo and his friends prepare as a big storm approaches Sesame Street.

Zeke is anxious about a big storm; Zeke turns into a "Wish Monster" when Zadie and Malik make his wish come true.

Flo Braker prepares petits fours, ladyfingers, madeleines and miniature Florentine squares.

A project dedicated to the Generation Next Initiative, working with apprentices, schools, and non-profits to promote the building trades in the younger generation; Mike Rowe joins the crew; the family plans to make accommodations for their children.

From picnics to tailgating to poolside, seven cooks prepare grab-and-go handheld treats and the ultimate in outdoor dining.

Billie Jean King and Arthur Ashe aim to win Wimbledon titles in 1975; off the court, they are both leaders of global social change.

Roasted bone-in chicken breasts; kitchen trash cans; baked potatoes.

Persian jeweled rice, a saffron and orange rice pilaf with cranberries and pistachios; Persian tomato and cucumber salad; crispy roasted cauliflower with tahini and lemon; the champagne cocktail French 75.

George Patton's gold World War I trench watch; a 1949 Charles Loloma pot; a 1944 Joseph Erlanger's Nobel Prize and diploma.

Santiago de Cuba has endured much and still celebrates its African roots and an ancient religious shrine.

How specific countries have risen and fallen; the history of money, including how various cultures developed and used it in exchange for items they valued.

When a member of the Marlow Sailing Club is killed, Tanika quickly enlists the services of Judith, Becks and Suzie.

A prestigious chess tournament turns deadly when old rivalries emerge.

An attack on a climate activist involves a culprit with a shocking claim.

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

Patience and Frankie are held hostage by an armed escaped prisoner claiming she is innocent; personal secrets start to emerge.