By the time Jean-Michel Basquiat and Alexis Adler broke up in 1980, the then-budding artist had used the walls of Adler’s East Village home as a canvas. Now Adler is revealing these works, along with photos and ephemera, for the first time.

In conjunction with its current exhibition, Gutai: Splendid Playground, the Guggenheim has developed a participatory website, Please Draw Freely, which invites users to create drawings in collaboration with living Gutai artists.

“The Curator’s Office, with its cigarette butts and coffee stains, is like a crime scene, motivating the viewer to uncover the identity left behind by this illusive figure,” says Mark Dion of his installation in the Minneapolis Institute of Art’s More Real show.

“A weapon kills people and makes people in cities dominated by fear,” says Pedro Reyes of his Disarm project, in which he turns guns into music-makers. “But if you turn it into an instrument, it’s like social gold. It brings people together and you build trust.”

China-born Cai Guo-Qiang, who makes pyrotechnic artworks meant to be seen from space, says he moved to the US because NASA’s here: “I was attracted to anything that would bring me closer to the universe—and the universe closer to me.”

On Monday, Christian Marclay inaugurated Open Air, a weeklong series of audio interventions broadcast on BBC Radio 4 and commissioned by Artangel. His contribution: an audio collage of BBC radio figures remixed in unexpected ways.