WASHINGTON, DC, July 29, 2003 (ENS) - Some Senate Republicans say there is considerable doubt that the climate is warming and if it is, humans are not responsible. Backing up statements he made on the Senate floor Monday, Oklahoma Senator James Inhofe today told colleagues of the Senate Environment and Public Works Committee that the science shows natural variability, not human activity, is the "overwhelming factor" influencing climate change. Inhofe cited findings of a study by Drs. Willie Soon and Sallie Baliunas of the Harvard-Smithsonian Center for Astrophysics that determined the 20th century was neither the warmest nor the century...