The adventures of Hergé: Tintin's creator in the limelight

We delve into the life and work of the artist behind Belgium's best-loved boy reporter, Tintin. Cartoonist Hergé is the focus of an exhibition at the Grand Palais in Paris, featuring examples from five decades of graphic creation. We also check out David Bowie’s collection of modern and contemporary art, as Sotheby’s prepares to auction what it calls a "spectacular" selection of pieces. And Washington welcomes a new museum dedicated to African American history and culture.