WHIQ-DT

Researching the identity of America's first peoples leads to Amazonian cave paintings, Mexican burial chambers, New Mexico's Chaco Canyon and waves off California's coast.

The rise of great American nations, from monarchies to democracies; lost cities in Mexico; a temple in Peru; a potlatch ceremony in the Pacific Northwest; shell beads in upstate New York.

An Andrew Clemens sand bottle circa 1885; a 1933 Goudey baseball card set 239/240; a Joan Miró pencil on paper circa 1965.

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.

Combining tai chi with brain and visualization exercises; isometric exercises using a towel.

Part 3/4. Steps four to eight in the Salute the Sun poses; linking steps one to eight.

A giraffe takes Creature Power Suit parts and supplies from the Tortuga.

Pinkalicious and Peter help Flora find her goat, Greta; Pinkalicious and friends make a costume for their new mascot -- the pinkatoo.

The Hunters find a stowaway in their picnic basket, a little furry dog.

Daniel Tiger's treat from Prince Tuesday's fruity ice treat cart starts to melt when he becomes distracted by all the other flavors.

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

When Oscar tries to find someone disappointed by his disappoint-o-meter, he accidentally makes them happy.

When Bex removes her cochlear implant and hearing aid so she can go on the waterslide, Sammy and the Wombats find new ways to communicate; the Wombats love Leiko's new mural.

Donkey Hodie and pals help Purple Panda celebrate his first Halloween in Someplace Else.

Rosie tries to be a reporter but has trouble finding things that are newsworthy; Rosie and Jun believe there is a jalapeno giant on the loose.

Elinor and her dad learn how to make their own chocolate; after accidentally breaking a jade plant, the kids learn how the plant grows.

Carl surprises Sheldon with a lemonade stand, but is confused when Sheldon runs off; Carl's caterpillars turn into butterflies.

Liana accidentally submits art that Stu made and feels guilty taking the credit for his work; Lyla and Luke perform an "Anansi" folktale puppet show.

Gwen Ifill shows Yadina that asking questions is a great way to get information; Matthew Henson shows Xavier and Brad that they can learn from each other.

Alma and Rafia try to give away rubber bands; Alma and Rafia think they've invited too many people to Safina's bake sale.

The agents must help some villains stop a robot that is threatening to flatten the city.

Molly wants to keep a frog as a pet -- until she realizes it requires high-maintenance; Molly and Tooey can't wait to see the petroglyphs at the beach.

A giraffe takes Creature Power Suit parts and supplies from the Tortuga.

Rebecca Hall and Lee Daniels research their family histories.

Our Vanishing Florida Americana showcases photographer Mike Lassiter's quest to capture the essence of Florida's back roads, coastlines, and main streets.

Hand-colored Andy Warhol lithographs; southern dolls, including an "Alabama Baby" doll purchased for 50 cents; Frederic Remington portrait with a letter from the artist.

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

Exploring the unique evolutionary journey of woodpeckers and the role they play in every ecosystem, except Antarctica and Australia.

Archaeological investigations into the origins of democracy in Greece 2,500 years ago; mass graves and ancient ruins where tyrants were murdered shine light on the birth of a revolutionary form of government.

From New York to Kolkata, dicovering the surprising and beneficial ways urban wildlife transforms cities into thriving, shared ecosystems.

Scientists and enthusiasts reveal the crucial roles bugs play on the planet and what the future would be without them.

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

Jenn visits Washington's Cherry Blossom Festival and plants a tree; Mark learns how Mount Rushmore was built and shows stone cutting; Nathan visits Abe Lincoln's house then replaces mortise hardware.