Barack Obama has picked an energy team that includes a Nobel Laureate obsessed with fighting global warming and an acolyte of Al Gore — a clear sign that he intends to move quickly on climate change legislation despite the dire economy.

Mr Obama has chosen as his Energy Secretary Steven Chu, who won the 1997 Nobel Prize for Physics and who in recent years has devoted himself to the cause of inventing alternative fuels.

The President-elect has also created a new post, a White House overseer of energy, environmental and climate policy — already known as an "energy tsar" — who will be responsible for driving his agenda on Capitol Hill. For this, he has picked Carol Browner, a former legislative director to Al Gore.

The choices, and the fact that Mr Obama is intent on co-ordinating environmental policy from inside the White House, underscores his intent to push ahead with his hugely ambitions and expensive plan to create alternative fuels, and reduce carbon emissions, despite the fierce resistance that will inevitably come from US industry.

Mr Obama is in fact exploiting the economic crisis as a way to justify much of his legislative agenda. He is arguing that economic recovery is tied implicitly to big reforms in areas such as healthcare, the environment and schools, and he appears to have a Democratic-controlled Congress willing to fund much of it.

Yesterday, as he announced Tom Daschle, the Democrats' former leader in the Senate, as his Health Secretary, Mr Obama said: "Now, some may ask how, at this moment of economic challenge, we can afford to invest in reforming our healthcare system. Well, I ask a different question — I ask how we can afford not to."

Mr Chu, 60, the son of Chinese immigrants, has been director of the Lawrence Berkeley National Laboratory in California since 2004. On his website, he says it has been his "mission" to make the facility the world leader in finding alternative and renewable energy sources. He views a shift away from fossil fuels central to fighting global warming.

On Tuesday, Mr Obama had a meeting in Chicago with Mr Gore, declaring afterwards: "The time for denial is over." He added, referring to climate change: "This is a matter of urgency and national security, and it has to be dealt with in a serious way. That is what I intend my Administration to do."

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