The process by which our bodies generate new blood vessels is fundamental to healing, reproduction, and development of the embryo. But a huge number of our most challenging diseases are also dependent on generating a new blood supply to the affected areas. Peter Evans examines cutting-edge research that is succeeding in controlling new vessel growth and beating disease at its own game, potentially offering a new means to halt cancer and a revolutionary way of curing heart disease. Producer Adrian Washbourne. EMAIL: Scirad@bbc.co.uk