The most extreme individuals and factions in Islamic countries are now more motivated than ever to kill Americans, and the number of potential terrorists has greatly expanded.

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.

In the remaining months, we should focus on achieving more robust international involvement in training of Iraqi soldiers, police officers, judges, teachers, and doctors - all key elements needed to end the sectarian and civil conflict and build Iraq's future.

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.

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.

The most extreme individuals and factions in Islamic countries are now more motivated than ever to kill Americans, and the number of potential terrorists has greatly expanded.

The scientists who do climate research understand that much of the ever increasing concentration of CO2 in the atmosphere since 1850 must be attributed to burning those fossil fuels to produce the energy that drives industrialization.