Brasington, Leigh: - Leigh Brasington began meditating in 1985 and eventually became the senior North American student of Ven. Ayya Khema. She not only taught him the Gradul Training, but also authorized him to teach; he began leading residential retreats in 1997. He has taught jhanas, dependent origination, and insight practices in over one hundred and fifty residential retreats. He is the author of the books Right Concentration: A Practical Guide to the jhanas and Dependent Origination and Emptiness: Streams Of Dependently Arising Processes Interacting.