WASHINGTON - President Barack Obama says it's time to roll back "billions of dollars in tax breaks" for oil companies and use the money for clean energy research and development.

Obama made the comments Wednesday in a speech at Carnegie Mellon University in Pittsburgh.

He said the catastrophic Gulf oil spill shows the country must move toward clean energy by embracing energy efficiency, tapping natural gas and nuclear power and eliminating tax breaks for big oil.

Obama said that… Continue