Cai Guo-Qiang's Gunpowder Paintings at MOCA
On a Monday evening in March, 150 guests are milling around behind a low metal barricade in MOCA's hangarlike Geffen space. All of them had to sign a release to get in, waiving their rights in case something goes wrong in the making of Cai Guo-Qiang's first gunpowder painting in......