Hereunder is the testimony of John R. Christy, PhD, presented to a US Senate Committee. He is a climate scientist of world renown. The gist of his testimony is that there is no evidence that human carbon dioxide emissions are having any influence in either the frequency or intensity of extreme weather events. On the other hand he points out that carbon dioxide is a plant food, and elevated levels of it in the atmosphere is providing more food for both humans and animal life. At this stage of human technology, carbon-based fuels are still an indispensable source of cheap energy without which the Third World could never escape from inhuman poverty levels.