"The oceans are being choked off of oxygen. They are dying as a result of this process we are seeing before our eyes the melting of the polar ice cap," Gore said at the World Economic Forum in Davos, Switzerland. "The assumption that we can continue on this path is an assumption that is collapsing."
Many countries are looking to Obama for aggressive action after frustration at the Bush administration's refusal to sign international pacts on reducing emissions of carbon, blamed for global warming.
Gore, U.N. climate chief Yvo de Boer and executives were discussing the fate of a U.N. meeting in Copenhagen this December aiming for a global agreement on reducing emissions. Questions remain over the new U.S. government's position on the Copenhagen meeting, which is seen as crucial.
"We need an agreement this year, not next year or some other time," Gore said.
Still, Gore expressed optimism in Obama, calling him "the greenest person in the room" for making environmental funding a big chunk of the $819 billion economic stimulus bill passed by the U.S. House of Representatives this week.
But he and other panelists acknowledged that the financial crisis will be a key challenge. Governments could shy from forcing polluting industries to pay for their carbon emissions or using taxpayer money for expensive new clean energy investments
- even if they prove more efficient in the long term.
"Undeniably the financial crisis is making things more difficult," U.N. climate chief Yvo de Boer, told Associated Press Television News. "There is a shortage of finance, you see that many renewable energy projects are being put on the back burner."
But he added, "If you look at the economic recovery packages of the European Union, the United States, Japan, China
- they are all using this as an opportunity to change the direction of economic growth, and that I find encouraging."