Whether you see artificial intelligence as a great promise or a menacing threat, it has suddenly become obvious to everyone that it's really here, and here to stay. I speak with William Carbone, an AI expert working in Bratislava for the computer giant IBM, about the current state of the art of AI and how it's projected to impact our future - either for better or for worse. A tissue biopsy has long been the preferred method for detecting or monitoring the progress of a cancer disease, but its shortcomings - it's both invasive and restricted to a limited region - have led to the development of liquid biopsy based on a simple blood test. I speak with Irena Hudecova, a Slovak scientist working in conjunction with Cambridge University in this fast-growing field.