Durga Kolla, recipient of a $500 thesis Capstone award, is a Public Health and Psychology (Neuroscience) double major with a minor in Biology. She is working under the mentorship of Dr. Laura Vandenberg in the Environmental Health Sciences department. Durga's honors thesis characterized the effects of two common xenoestrogens, Bisphenol S and Ethinyl estradiol, on the female mouse mammary glands at prepubertal and pubertal stages of development. Her thesis shows that both xenoestrogen treatments altered mammary gland morphology and the expression of proliferative and hormonal markers. In addition to working in the Vandenberg Lab, Durga is a 4+1 student, and will be pursuing her Masters in Environmental Health Sciences at UMass next year. She is investigating the effects of xenoestrogens on pubertal timing and altered hormonal status in the Vandenberg Lab for her Master's Thesis.