The Software Stewardship Lab, a nonprofit organization based in Scotland, has announced its existence. Our current research focuses are: Software supply chain security — We're working on an observatory that allows users to identify and monitor the world's critical Open Source packages in real time, including previously hidden parts of the dependency graph. Maintainer burnout — Our report on burnout in Open Source has been well-received. We're working on yearly follow-ups, plus a companion report on how AI is affecting maintainer burnout. Moving forward, the Lab's experts will direct funding to and supervise Open Source sustainability researchers doing critical work. We are already working with universities to teach the next generations of software supply chain experts.