Biological Sciences

The Evolution of Bird Wrists from Dinosaurs Wrists

A diagram of the bird wing, including the bird wrist and its constituent bones.

Alexander Vargas of the University of Chile has solved the mystery of how dinosaur wrists evolved into bird wings. To do so, he and his team united the fields of embryology and paleontology. By approaching this problem in a new way, he could explain some aspects of bird evolution, such...


Cancer cells can induce normal cells to turn cancerous

Exosomes from human breast cancer cells co-injected with noncancerous human epithelial into healthy female mice induced tumor growth of the epithelial cells. These exosomes contain pre-miRNA and Dicer protein that can interact to affect oncogenic gene expression.

According to the current understanding, cancer develops when a single, aberrant cell proliferates into a full-fledged tumor. However, new evidence suggests that cancer cells can also transform healthy cells into tumorous ones via an “oncogenic field effect.” This research could lead to a more complete understanding of the spread of...


Scientists restore hearing to sound-deafened mice

Scientists have been able to restore hearing to deaf mice using a protein called neurotrophin-3

Scientists at the University of Michigan and Harvard University have been able to restore hearing to deaf mice using a protein called neurotrophin-3 (NT3). Gabriel Corfas, the lead scientist on the project, is hoping to develop a similar treatment for humans. The research holds promise for those who have lost...


Positron Emission Tomography in Neuroscience and Diabetes

A full body PET scan using 2-fluorodeoxyglucose. 
Copyright SEELA, UCLA

The Yale PET Center is experimenting with ways in which positron emission tomography, previously a tool used preferentially for brain imaging studies, can be generalized to study the concentrations of clinically relevant chemical substances in other parts of the body. The center, headed by Professor of Biomedical Engineering Richard Carson,...


Bee Population Linked to Malnutrition

Pollinators, like bees, fertilize crops high in essential nutrients.

A declining bee population could have a negative impact on countries grappling with malnutrition. A recent study conducted by Rebecca Chaplin-Kramer, a landscape ecologist at Stanford University, examined the link between pollinators (mainly bees) and global health through the lens of nutrition.  Chaplin-Kramer, along with a group consisting of pollination...


Mission Statement

Founded in 1998, the Dartmouth Undergraduate Journal of Science aims to increase scientific awareness within the Dartmouth community by providing an interdisciplinary forum for sharing undergraduate research and enriching scientific knowledge.

Want to join the DUJS staff?

All the undergraduates of Dartmouth College are welcome to join our staff. Our staff includes students interested in writing, editing, photography, graphics, web design, and more! Please contact us to be added to our e-mail list. Staff meetings are Thursday evenings at 8 pm in Carson L02.