Second visit: bunch of grapes
They also explained the history of preventative measures against hail and the present situation. It is impossible to prevent hail but it is now possible to reduce the impact by reducing the size of the hailstones. This is done by firing iodure d'argent into the thunderclouds. This can either be done from above using a plane or by firing rockets from the ground. Rockets are the safest solution as it is dangerous for planes to fly close to storm clouds because of the turbulence.