We are now told that this is not a time to point fingers, even as some of those saying, "Don't point fingers," are themselves pointing fingers at the victims of the tragedy, who did not -- many of whom could not -- evacuate the city of New Orleans, because they didn't have automobiles, and they did not have adequate public transportation.

We're told this is not a time to hold our national government accountable because there are more important matters that confront us. This is not an either/or choice. They are linked together. As our nation belatedly finds effective ways to help those who have been so hard hit by Hurricane Katrina, it is important that we learn the right lessons of what has happened, lest we are spoon-fed the wrong lessons from what happened. If we do not absorb the right lessons, we are, in the historian's phrase, doomed to repeat the mistakes that have already been made.

All of us know that our nation -- all of us, the United States of America -- failed the people of New Orleans and the Gulf Coast when this hurricane was approaching them, and when it struck. When the corpses of American citizens are floating in toxic floodwaters five days after a hurricane strikes, it is time not only to respond directly to the victims of the catastrophe but to hold the processes of our nation accountable, and the leaders of our nation accountable, for the failures that have taken place. [applause]

[...]

There are scientific warnings now of another onrushing catastrophe. We were warned of an imminent attack by Al Qaeda; we didn't respond. We were warned the levees would break in New Orleans; we didn't respond. Now, the scientific community is warning us that the average hurricane will continue to get stronger because of global warming. A scientist at MIT has published a study well before this tragedy showing that since the 1970s, hurricanes in both the Atlantic and the Pacific have increased in duration, and in intensity, by about 50 percent.

The newscasters told us after Hurricane Katrina went over the southern tip of Florida that there was a particular danger for the Gulf Coast of the hurricanes becoming much stronger because it was passing over unusually warm waters in the gulf. The waters in the gulf have been unusually warm. The oceans generally have been getting warmer. And the pattern is exactly consistent with what scientists have predicted for 20 years. Two thousand scientists, in 100 countries, engaged in the most elaborate, well-organized scientific collaboration in the history of humankind, have produced long-since a consensus that we will face a string of terrible catastrophes unless we act to prepare ourselves and deal with the underlying causes of global warming. [applause]

It is important to learn the lessons of what happens when scientific evidence and clear authoritative warnings are ignored, in order to induce our leaders not to do it again and not to ignore the scientists again and not to leave us unprotected in the face of those threats that are facing us right now. [applause]

The president says that he is not sure that global warming is a real threat. He says that he is not ready to do anything meaningful to prepare us for a threat that he's not certain is real. He tells us that he believes the science of global warming is in dispute. This is the same president who said last week, "Nobody could have predicted that the levees would break."

It's important to establish accountability in order to make our democracy work. And the uncertainty and lack of resolution, the willful misunderstanding of what the scientific community is saying, the preference for what a few supporters in the coal and oil industry -- far from all, but a few -- want him to do -- ignore the science -- that is a serious problem.

[...]

This is a moral moment. This is not ultimately about any scientific debate or political dialogue. Ultimately it is about who we are as human beings. It is about our capacity to transcend our own limitations; to rise to this new occasion; to see with our hearts, as well as our heads, the unprecedented response that is now called for; to disenthrall ourselves; to shed the illusions that have been our accomplices in ignoring the warnings that were clearly given; and hearing the ones that are clearly given now.

Where there is no vision, the people perish. And Lincoln said at another moment of supreme challenge that the question facing the people of the United States of America ultimately was whether or not this government, conceived in liberty, dedicated to freedom, of the people, by the people, and for the people -- or any government so conceived -- would perish from this earth.

There is another side to this moral challenge. Where there is vision, the people prosper and flourish, and the natural world recovers, and our communities recover. The good news is we know what to do. The good news is, we have everything we need now to respond to the challenge of global warming. We have all the technologies we need, more are being developed, and as they become available and become more affordable when produced in scale, they will make it easier to respond. But we should not wait, we cannot wait, we must not wait, we have every thing we need -- save perhaps political will. And in our democracy, political will is a renewable resource. [sustained applause]

[Thanks to Susan]

More here.

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