Julian Barbour, visiting professor at the University of Oxford and the author of The End of Time, addresses the question, Does Time Exist? Barbour explores the history of scientific thought on the concept of time and presents his own interpretations of what time is.

Jacalyn Duffin from the Department of Medicine at Queen's University is profiled. She discusses her teaching style and how she ended up researching the history of medicine.

Jacalyn Duffin of the Department of Medicine at Queen's University on History of the Stethoscope and the Meaning of Life.

Doug Richards from the Physical Education & Health department at University of Toronto St. George on Stretching: The Truth. Richards discusses the science and the fiction of the benefits of stretching prior to exercise.

Doug Richards from the Physical Education & Health department at University of Toronto St. George is profiled. Richards' concussion research, his passion for photography and cycling are featured.

Dr. Iain McGilchrist is a renowned psychiatrist and author. Drawing from his book, "The Master and his Emissary", McGilchrist explores how the divided brain is shaping modern civilization. His lecture was delivered at McMaster University in Hamilton, Ontario, on March 7, 2012.

Don Kurtz, of the University of Central Lancashire, discusses asteroseismology in a lecture entitled Songs of the Stars: The Real Music of the Spheres. He explains how sound waves are helping to locate distant Earth-like planets, study solar storms and explain what happens in the core of stars.

Profile of Dr. Michael Persinger focussing on his research into brain stimulation to recreate drug experiences.

Virginia Walker from the Biology Department at Queen's University presents her competition lecture entitled HIV, Parasites and the Exhausted Immune System.

Virginia Walker discusses her involvement in women's hockey, attending school in Nova Scotia and her love of research.

Dr. Michael Persinger, (Laurentian University - Neuroscience) winner of the 2007 Best Lecturer Competition, on Psychotropic Drugs.

Dr. Leon Kass, Chair of the President's Council on Bioethics, examines the ethical dilemmas surrounding stem cell research. Dr. Kass addresses the philosophical question: Why not immortality?

Leroy Hood, of the Institute for Systems Biology, on Emerging Technologies and the Transformation from Reactive to Proactive Medicine.

Vaclav Smil of the Faculty of Environmental Studies, University of Manitoba, discusses Energy Transitions in this lecture which was part of the Waterloo Global Science Initiative (WGSI)Equinox Summit, hosted by the Perimeter Institute.

Primatologist Jane Goodall delivers a lecture on the similarities between chimpanzee and human emotions, preserving the environment, and hope.

Stanford University professor of Physics, Leonard Susskind, on ?The Black Hole Wars?, the scientific disagreement between Susskind and Stephen Hawking.

Natalia Toro explains how complex collision data from the Large Hadron Collider (LHC) is being digested and examined and how it may set the course for the science of the future. Her lecture was delivered at the Perimeter Institute in Waterloo on September 18, 2011.

Seth Llyod is a Professor in the Department of Mechanical Engineering at the Massachusetts Institute of Technology (MIT). His talk, "Programming the Universe", is about the computational power of atoms, electrons, and elementary particles.