The Cornell Atkinson Center for Sustainability invites applications for its Postdoctoral Fellowship in Sustainability, supporting early-career researchers conducting interdisciplinary projects that address global sustainability challenges. Fellows work under the mentorship of a Cornell faculty member and an external partner organization, with research aligned to one or more of the Center’s priority areas: Accelerating Energy Transitions, Reducing Climate Risk, Increasing Food Security, and One Health. Eligible applicants are researchers who have earned, or will earn, a PhD within two years of the fellowship start date. Up to four fellowships will be awarded, each providing a three-year appointment, an annual salary of US$65,000, full employee benefits, and US$12,000 per year for research and travel expenses. Applications, including letters of recommendation, are due by 20 October 2026. Postdoctoral Fellowship