US President George W. Bush said new technologies were ushering in a "post-Kyoto" era on how to feed energy-hungry economies on a climate-friendly diet of alternatives to oil.

Bush, who called in his State of the Union speech late Tuesday for cutting US gasoline use by 20 percent over 10 years, warned that the United States had become "exponentially more dependent" on oil imports over the past decade.

He warned that this left the country "vulnerable" to pressure from hostile petroleum-exporting regimes but held out hope that new technologies could help resolve both climate change and energy concerns.

"It's the confluence of national security and economic security concerns and environmental concerns that come together and can be solved at the same time by technologies. It's really what's begun to evolve here in America," he said.

"In other words, we can get beyond the pre-Kyoto era with a post-Kyoto strategy, the center of which is new technologies," he said, referring to the Kyoto Protocol on curbing so-called greenhouse gas emissions blamed for global warming.

Provided by AFP.