Jodi Rockwell and Toi Sennhauser collaborated to create Transpulse, a streetside snowscape created with a fall of flour. In September, when this piece was first installed in Broadway’s Body Jewelry Plus storefront as part of Sound Transit’s STArt project, the weather system was live. The mesh-ceilinged cube pulsed and precipitated, flour sifting from above with a rhythmic, bumping shimmy. But the storm has passed. Now you’ll see a rectangular opening, installed at head height, the size of an average TV. Pink fake fur covers the interior walls, while a system of deep-purple felt ropes are strung across the open cube: branches. The view is framed by mossy green paint coating the rest of the window. White flour has accumulated on the branches and in drifts upon the floor of the faux-nature diorama. Powder dusts the inside of the window, like frost clinging to cold glass. Last year Rockwell showed a similarly snowing window scene at The Lab Gallery in Manhattan: flour falling on Victorian furniture. Transpulse offers a small-scale sequel with a new context. Catch it before the building comes down.