Ken Heller was born in Trinidad during World War II. He grew up in South Florida where he graduated high school. After high school he went to the University of California, Berkeley. He graduated from Berkeley with a physics degree and entered graduate school at the University of Washington. After his first year at Washington, he took a leave to join the Peace Corps where he served in Nigeria and Kenya teaching physics, general science, mathematics, and coaching basketball. He also participated in a workshop in Ghana to improve the preparation of school teachers in science. Upon his return to Washington, he worked with a small group of like-minded graduate students to change the teaching of introductory physics laboratories and the role of TAs; develop and lead a summer program to involve eighth grade minority students in research; bring physics to some of the country’s first art fairs. During that time, he learned how to ski and climb mountains. At Washington, he joined the experimental high energy physics group, and moved back to California to help run an experiment at the Berkeley Bevatron and then help build his dissertation experiment at the Stanford Linear Accelerator. While at the Bevatron and SLAC, he worked at the Lawrence Hall of Science in Berkeley and the Exploratorium in San Francisco during their development. Returning to Washington to analyze his data, he worked with the Pacific Science Center in Seattle, set up a mini-Exploratorium in the physics department, and lobbied Congress against the Vietnam war. He also met his future wife Patricia, a fellow graduate student and instructor at the University of Washington in one of the groups that established the field of Physics Education Research. Following his marriage to Patricia, he took a post doc at the University of Michigan where he helped build some of the first experiments at Fermilab, E-8 and its successors, and analyzed data at CERN. He then joined the physics faculty at the University of Minnesota, and continued his experimental work at Fermilab, Brookhaven and in the Soudan mine. During this time that he also helped build the experiment that discovered the Tau neutrino at Fermilab and the MINOS and NOvA long baseline neutrino oscillation experiments that connected Fermilab with Northern Minnesota. He also joined with his wife to form one of the early PER groups. The PER group pioneered work that investigated the problem solving of introductory physics students and developed curricular tools that encouraged students to develop the necessary collaborative and metacognitive skills to solve problems. Today, Ken continues to work in both high energy physics and PER. In PER, Ken’s current work includes investigating potential diversity barriers in the physics PhD program, the development of computer software to provide personal coaches for the metacognitive skills necessary for problem solving, and the role of algorithmic mathematics in physics courses. In high energy physics, Ken continues his work in physics beyond the Standard Model by helping to build the Mu2e experiment that looks for charged lepton flavor violation and exploiting the increasing data from the NOvA neutrino oscillation experiment.