For millennia, psychedelic substances have been used as sacraments, medicines, and tools to shift consciousness and expand the mind. Why have these compounds captivated humans for so long and how do they actually work in the brain? What are their benefits and pitfalls? And what is their impact on consciousness, our sense of connection, and our capacity for creativity? Activist Rick Doblin, neuroscientist Gül Dölen, and musician/comedian Reggie Watts join Brian Greene for a mind-bending conversation about these "magic molecules" and their transformative power. This program is part of the Big Ideas series, supported by the John Templeton Foundation.Learn More