We all dream of a renewable-dominant future and are working hard to get there. We also know there is a long road ahead of us, but at a recent American Associate for the Advancement of Science meeting, Sandy MacDonald, director of the NOAA's Earth System Research Laboratory (ESRL), gave some hopeful words of encouragement. According to a three-year ESRL study, solar and wind power could provide 70 percent of the continental U.S. electricity needs by 2030.