Tracing marijuana to its roots
by Marmian L. Grimes, University Relations
![[Photo: Read caption below]](images/zoom/carousel.jpg)
UAF photo by Marmian Grimes
Tim Howe, a research technician at the Alaska Stable Isotope Facility, demonstrates how to load sample capsules into an autosampler tray. The samples are then combusted for testing in a stable isotope ratio mass spectrometer.
Submit
a feature story idea
Browse UAF
feature story archives
Photo/video
policy