Adams has since moved from his shack into the Subzero Research Facility at Montana State, where he now studies snow by growing it in "cold rooms" (about –5°F). In the room, he blows air over a small water reservoir that he keeps at 65°. He then channels water vapor up a chimney and into a cat's cradle of strings, where the vapor crystallizes. When he plucks the strings, snowflakes fall. Adams collects his snow in a box and carries it into a different room, one with a refrigerated ceiling, simulating what snow experiences outdoors under a cold winter sky. He is interested in radiation recrystallization, a phenomenon that occurs as snow deeper in the pack becomes warmer than that at the top. Once he has warmed the snow with lamps, he adds more, cuts the frosty layers in half, paints spots onto the side of the snow, and sets up a camera. A computer program records the movement of the paint specks while Adams top-loads and stress-tests the snowpack. "We track the deformation of the snow until failure," he says, and he works with forecasters to help find the same kind of unstable spots on mountains.