Daniel Vischer, Professor Emeritus of Hydraulic Engineering, Hydrology and Glaciology at ETH Zurich, is a scientist who knows what global hydropower can cause. He lectured on Creation versus Evolution - Global Flood Yes or No - The Content of Scientific Knowledge in the Bible - With God through Life in All Situations His expertise was in demand even at federal level: The History of Flood Protection. He was an honorary member of the Christian student movement in Zurich and gave valuable lectures.