Why didn’t Bill address the issue?
Hillary Clinton has a bold and comprehensive plan to address America's energy and environmental challenges, which shows that environmental issues is more important in the president election campaign for 2008, than ever. On her website you can read:
Setting ambitious targets, the plan would reduce greenhouse gas emissions by 80 percent from 1990 levels by 2050 to avoid the worst effects of global warming, and cut foreign oil imports by two-thirds from 2030 projected levels, more than 10 million barrels per day.
Hillary would transform our economy from carbon-based to clean and energy efficient, jumpstarting research and development through a $50 billion Strategic Energy Fund and doubling investment in basic energy research. She would also spur the green building industry by funding the retrofitting and modernization of 20 million low-income homes and take concrete steps to reduce electricity consumption, including enacting strict appliance efficiency standards and phasing out incandescent light bulbs.
Recognizing that transportation accounts for 70 percent of U.S. oil consumption, Hillary would increase fuel efficiency standards to 55 miles per gallon by 2030, but would help automakers retool their production facilities through $20 billion in "Green Vehicle Bonds."

Better late than never!
http://http://www.hillaryclinton.com/issues/energy/