Jill Biden and Trisha Yearwood join to create a tablescape made with fresh flowers and prepare recipes.

From the desk on which Jefferson wrote the Declaration of Independence to Dorothy's ruby slippers, the National Museum of American History houses many of America's greatest treasures and icons. Learn the stories of how they came to be a part of the museum's collection, and meet the people who have restored some of these treasures.

Alaska – 90,000 square miles of wilderness. Could its uninhabited frontier be hiding monsters and mysteries?