Scientists with access to data from Navy submarines traversing underneath the North polar ice cap have warned that there is now a 75 percent chance that within five years the entire ice cap will completely disappear during the summer months.

When you look at what has happened over the last few decades the natural fluctuations point in the opposite direction of what has actually occurred. When they run the models and plug in the man-made pollution, the correspondence is exact. Beyond that, the scale of natural fluctuations has now been far exceeded by the impact of man-made global warming.

The debate's over. The people who dispute the international consensus on global warming are in the same category now with the people who think the moon landing was staged on a movie lot in Arizona.

I have faith in the United States and our ability to make good decisions based on the facts.

The constant drive for campaign dollars has distorted decision-making in Washington, DC, to the point where our systems can no longer effectively address complex, long-term problems like the climate crisis. Which brings me to my other major concern - the short-term focus of capitalism. It distorts the allocation of resources and the decision-making processes of companies.

Of all the works of civilization that interfere with the natural water distribution system, irrigation has been by far the most pervasive and powerful.

Cigarette smoking is a significant contributor to global warming!