New impressive work from Microsoft and collaborators. And it's one of my favorite recent topics: RL environments. They show that Qwen3.6-35B-A3B goes from 41.1 to 53.3 on Terminal-Bench 2.1 by training on environments it designed itself. AutoEnvScaling gives environment design to a proposer agent that works in a terminal, looks at the rollouts of the model being trained, and builds new RL environments from them. The trained model's next rollouts guide the next round. Building environments…