We need to make it clear that we will withdraw from Iraq within 6 to 9 months - so that the Iraqis will know that they must stand up and defend the opportunity given to them.

As a scientist, my attention became totally focused on global warming some 15 years ago by the elegant and powerful measurements of carbon dioxide trapped in ice cores taken as much as 2 miles deep from the great East Antarctica ice sheet.

We need to make it clear that we will withdraw from Iraq within 6 to 9 months - so that the Iraqis will know that they must stand up and defend the opportunity given to them.

So a truthful assessment of how America is doing in the war on terror as a result of President Bush's war on Iraq is that we have been set back by decades.

Americans were told repeatedly by President Bush and Vice President Cheney that Iraq had weapons of mass destruction. None were ever found.

The industrialization of China alone would increase by 90 percent the concentration of CO2 in our atmosphere and would at least increase the atmospheric CO2 by at least another 100 parts per million.

President Bush's war on Iraq is viewed broadly in Islamic communities as an attack on Islam, and thus the President has alienated a large part of one fifth of the world's population.