Emma Garval 鈥�21 in the National Institute of Environmental Health Sciences鈥� (NIEHS) communication challenge, in which NIEHS summer interns presented 聽their research in less than three minutes. Garval鈥檚 research focused on the relationship between obesity and changes to what鈥檚 referred to as one鈥檚 鈥渆pigenetic clock.鈥� She found a correlation between obesity and increased biological (versus chronological) age, a marker of increased mortality. 鈥淭hese clocks are really interesting because they are strongly related to risk of dying, even more so than actual age,鈥� she said.