On Dec. 30, 2021, a fast-moving wildfire in suburban Boulder County became the costliest wildfire in Colorado history. It burned 6,000 acres, destroyed more than 1,000 homes and damaged thousands of others. The Marshall Fire also spurred researchers—many personally affected by the fire—to apply their expertise to the aftermath. A year later, dozens of ongoing research projects continue to explore the science behind the fire; its widespread impacts; and how we can mitigate future catastrophes in a changing climate.