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

Clearly, a stable, unified and democratic Iraq cannot be achieved militarily by the U.S.

America has lost the moral high ground with the rest of the world, and we have fewer allies as a result. President Bush and his administration have undermined the war on terror by using tactics outlawed by international treaty and condemned by even our closest friends.

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.

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.

The conduct of President Bush's war of choice has been plagued with incompetent civilian leadership decisions that have cost many lives and rendered the war on and occupation of Iraq a strategic policy disaster for the United States.

Since 1850, burning of fossil fuels, coal, oil and natural gas has increased 100 times to produce energy as the world has industrialized to serve the world's more than 6 billion and growing population.