nuclear energy is the "best candidate".
Awards:
1977 Goddard Special Achievement Award (Pioneer Venus)
1978 NASA Group Achievement Award (Voyager, Photopolarimeter)
1984 NASA Exceptional Service Medal (Radiative Transfer)
1989 National Wildlife Federation Conservation Achievement Award
1990 NASA Presidential Rank Award of Meritorious Executive
1991 University of Iowa Alumni Achievement Award
1992 American Geophysical Union Fellow
1993 NASA Group Achievement Award (Galileo, Polarimeter/Radiometer)
1996 Elected to National Academy of Sciences 1996 GSFC William Nordberg Achievement Medal
1996 Editor Citation for Excellence in Refereeing for Geophysical Research Letters
1997 NASA Presidential Rank Award of Meritorious Executive
2000 University of Iowa Alumni Fellow
2000 GISS Best Scientific Publication (peer vote): Global warming - alternative scenario
2001 John Heinz Environment Award
2001 Roger Revelle Medal, American Geophysical Union
2004 GISS Best Scientific Publication (peer vote): Soot Climate Forcing
2005 GISS Best Scientific Publication (peer vote): Earths Energy Imbalance
2006 Duke of Edinburgh Conservation Medal, World Wildlife Fund (WWF)
2006 GISS Best Scientific Publication (peer vote): Global Temperature Change
2007 Laureate, Dan David Prize for Outstanding Achievements & Impacts in Quest for Energy
2007 Leo Szilard Award, American Physical Society for Outstanding Promotion & Use of Physics for the Benefit of Society
2007 Haagen-Smit Clean Air Award
2008 American Association for the Advancement of Science Award for Scientific Freedom and Responsibility
2008 Nevada Medal, Desert Research Institute
2008 Common Wealth Award for Distinguished Service in Science 2008 Bownocker Medal, Ohio State University
2008 Rachel Carson Award for Integrity in Science, Center for Science in the Public Interest
2009 Carl-Gustaf Rossby Research Medal, American Meteorological Society
2009 Peter Berle Environmental Integrity Award
2010 Sophie Prize for Environmental and Sustainable Development
2010 Blue Planet Prize, Asahi Glass Foundation
Nuclear energy is the safest form of dispatchable energy except for hydro.

The waste produced by an average coal plant is 400,000 tons/year of carcinogenic fly ash. The waste from a comparable nuclear plant is 27 tons/year.