Artwork is disappearing from Denver International Airport. But don’t worry. It’s nothing mysterious — or worse — nefarious. The artwork is going into storage as part of a $500,000 remove and store project connected to the airport’s massive, upcoming remodel. The $650 million Jeppesen Terminal renovation begins in July and several art pieces, including the controversial, and often photographed, “Children of the World Dream of Peace,” by Leo Tanguma, are being taken down and stored until the construction wraps up. Five pieces have been, or will be, moved by July 1, as part of a Phase One grouping, said Jimmy Luthye, a DIA Great Hall project spokesman.