isotopes

Your hair knows what you eat and how much your haircut costs

Isotopes in hair reveal connection between diet and socioeconomic status.


Seal conservation strategies

Chemical records in teeth confirm elusive Alaska lake seals are one of a kind.


Flying across America for POWs and for science

A geology professor explores the way water weaves through America—and into Americans’ very bones.


TEACHING SKILLS, LAUNCHING CAREERS

Students in long-running summer short course make friends, find mentors and learn some isotope science along the way.