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Twin sisters Christine and Marlene, separated at birth, meet by chance to learn more about each other they swap lives.

Angkor was the capital of the Khmer empire, which controlled much of the region between the 9th and 15th centuries.

From slingshots that can throw rockets into space to the latest in artificial sight, see how engineers are amplifying the human body’s powers.

Lion researcher follows three orphaned desert lion cubs as they navigate the brutal Skeleton Coast of Namibia.

Marine veteran Anthony Marquez makes it his mission to reconnect with the Gold Star families of the fallen.

As the police race against time, Tanika recruits the trio as civilian advisors to help catch the killer. Will they catch the killer?

Join country music star Mickey Guyton for a heartfelt Veterans Day celebration honoring our nation’s heroes with inspiring military stories.

We travel to Patagonia and Gilbert to hike along Arizona’s rare riparian areas and learn more about the importance of water in our state.

Venture into the quantum universe, where things get very weird. Take a look at the world on the smallest scale in the subatomic realm.

Celebrate the Indigenous creators and their influence in history through their incredible art and artifacts.