After Copenhagen: What's Next for Climate Change?

In Copenhagen today, President Obama met with other national leaders, then scolded convention delegates for their apparent failure to reach agreement on climate change. Faced with China's rejection of international oversight, he told the conference that if their effort fails, the "same stale arguments" may continue, "while the danger of climate change grows until it is irreversible." So if the conference collapses, what's next?   Will the US Senate pass cap and trade? Will China follow through on its commitment to curb emissions? Will international competition produce "the energy technology that nobody has yet imagined?" We look at the prospects.