SINGAPORE — If China and other Asian nations shy away from atomic power following Japan's nuclear crisis, would it intensify the impact of climate change on the region?

The question is no longer hypothetical. Many governments have already announced reviews or delays of programs to use nuclear reactors to generate electricity. Whether warranted or not, each new report of radiation leakage from the stricken Fukushima plant in Japan is increasing public and political opposition to expansion of nuclear power.

One of the attractions of this technology is its ability to produce large amounts of electricity over long periods of time without emitting the huge quantities of carbon dioxide (CO2) from burning fossil fuels, especially coal for power and heavy industry, and oil for transport. CO2 is the main man-made global-warming gas.