It’s ironic that as Denver’s Clyfford Still Museum celebrates its fifth anniversary, nine of the artist’s most important paintings are far from Denver. They’re in London, on loan to the Royal Academy of Arts for a major exhibition on abstract expressionism. It’s the first time any of Still’s works have been allowed to leave Denver since the museum opened in 2011. But Denver’s temporary loss is the art world’s gain, says the museum’s director, Dean Sobel. He spoke with Colorado Matters host Ryan Warner.