Our Divisions

Aquatic ecologist Stephanie Hampton joined Carnegie as Deputy Director of Carnegie’s newly launched Division of Biosphere Sciences & Engineering at the end of July 2022. Hampton’s research focuses on the dynamic factors that shape aquatic ecosystems, with a focus on Lake Baikal in Siberia and the lakes of the Pacific Northwest. Her work has informed environmental conservation efforts and policymaking.

Experimental petrologist Michael Walter became Director of the recently formed Carnegie Earth & Planets Laboratory in 2022, where he was previously Deputy Director. His recent research focuses on the period early in Earth’s history, shortly after the planet accreted from the cloud of gas and dust surrounding our young Sun, when the mantle and the core first separated into distinct layers.

Alycia Weinberger is an observational astronomer interested in planet formation, exoplanets, and brown dwarfs. She explores the early history of planets and how they interact with their natal environment, the circumstellar disk. She studies how material is distributed in disks, how disks dissipate, and how the compositions of disks may translate into those of planets. As Associate Division Director she works closely with Director Michael Walter to help set and execute the overall scientific and cultural vision for EPL, manages the postdoctoral fellows program, and oversees the division's colloquium and EPIIC programs.

John Mulchaey is a Carnegie Science Trustee and the Interim President of the institution, as well as the Crawford H. Greenewalt Chair of the Carnegie Science Observatories, the organization’s division for astronomy and astrophysics research. In this role, he oversees the research and business functions across Carnegie Science three scientific Divisions, composed of research sites on the East and West Coasts and telescope facilities in Chile.