Successful projects of the URoL:Epigenetics Program are anticipated to use complementary, interdisciplinary approaches to investigate how epigenetic phenomena lead to emergent properties that explain the fundamental behavior of living systems. Ultimately, successful projects should identify general principles (“rules”) that underlie a wide spectrum of biological phenomena across size, complexity (e.g., molecular, cellular, organismal, population) and temporal scales (from sub-second to geologic) in taxa from anywhere within the tree of life. URoL:Epigenetics projects must integrate perspectives and research approaches from more than one research discipline (e.g., biology, chemistry, computer science, engineering, geology, mathematics, physics, social and behavioral sciences). The interdisciplinary scope of URoL:Epigenetics projects also provides unique training and outreach possibilities to train the next generation of scientists in a diversity of approaches and to engage society more generally. Full proposal deadline: February 1, 2019.