Smithsonian Channel Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S. 2026-04-02 Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert. 2026-04-02 Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries. 2026-04-02 Over three millennia, more than 340 pharaohs succeeded one another to make Ancient Egypt one of the world's most captivating civilizations; thanks to the latest discoveries by specialists, a look at the story of Egypt's greatest pharaohs. 2026-04-02 Egyptologists believe there was a perfect pyramid, hidden in the sands of Abu Rawash, which served as a tomb for the pharaoh Djedefre. 2026-04-02 2026-04-03