This month’s issue of AQUILA investigates the man behind Mona Lisa’s smile. We find out how Leonardo created his paints from plant and mineral pigments and have fun making an edible Pizza Paint Palette! Children can experiment with geometric fractal patterns to discover the mathematical properties of the Flower of Life and even tackle Fluid Dynamics! We take a tour of Leonardo’s Florence and also visit Body Works London, an exhibition that displays preserved human remains. PLUS: did Leonardo really leave secret jokes and codes hidden in his masterpieces? AQUILA examines the evidence.