Now his amused look was like that of everyone’s favorite uncle. “So they reeled you in for this on the fly.” Then, holding a hand up to stop all of them, he nearly whispered: “Sorry should I whisper?”

“No sir, no need for that,” Charlie assured him in his ordinary speaking voice. “He’s out for the duration. Pay no attention to that man behind the shoulder.”

The President smiled. “Got a wizard on your back, eh?”

Charlie nodded, smiling quickly to conceal his surprise. It was a pastime in some circles to judge just how much of a dimwit the President was, how much of a performing puppet for the people manipulating him; but facing him in person, Charlie felt instantly confirmed in his minority position that the man had such a huge amount of low cunning that it amounted to a kind of genius. The President was no fool. And hip to at least the most obvious of movie trivia. Charlie couldn’t help feeling a bit reassured.

Now the President said, “That’s nice, Charles, let’s get to it then, shall we? I heard from Dr. S. here about the meeting this morning, and I wanted to check in on it in person, because I like Phil Chase. And I understand that Phil now wants us to join in with the actions of the Intergovernmental Panel on Climate Change, to the point of introducing a bill mandating our participation in whatever action they recommend, no matter what it is. And this is a UN panel.”

“Well,” Charlie said, shifting gears into ultradiplomatic mode, not just for the President but for the absent Phil, who was going to be upset with him no matter what he said, since only Phil should actually be talking to the President about this stuff. “That isn’t exactly how I would put it, Mr. President. You know the Senate Foreign Relations Committee held a number of hearings this year, and Phil’s conclusion after all that testimony was that the global climate situation is quite real. And serious to the point of being already almost too late.”

The President shot a glance at Strengloft. “Would you agree with that, Dr. S.?”

“We’ve agreed that there is general agreement that the observed warming is real.”

The President looked to Charlie, who said, “That’s good as far as it goes, certainly. It’s what follows from that that matters you know, in the sense of us trying to do something about it.”

Charlie swiftly rehearsed the situation, known to all: average temperatures up by six degrees Fahrenheit already, CO2 levels in the atmosphere topping six hundred parts per million, from a start before the industrial revolution of 280, and predicted to hit a thousand ppm within a decade, which would be higher than it had been at any time in the past seventy million years. Two and a half billion metric tons of CO2 added to the atmosphere by American industry every year, some 150 percent more than the Kyoto agreement would have allowed if they had signed it, and rising fast. Also long-term persistence of greenhouse gases, on the order of thousands of years.

Charlie also spoke briefly of the death of all coral reefs, which would lead to even more severe consequences for oceanic ecosystems. “The thing is, Mr. President, the world’s climate can shift very rapidly. There are scenarios in which the general warming causes parts of the Northern Hemisphere to get quite cold, especially in Europe. If that were to happen, Europe could become something like the Yukon of Asia.”

“Really!” the President said. “Are we sure that would be a bad thing? Just kidding of course.”

“Of course sir, ha ha.”

The President fixed him with a look of mock displeasure. “Well, Charles, all that may be true, but we don’t know for sure if any of that is the result of human activity. Isn’t that a fact?”

“Depends on what you mean by ‘know for sure,’” Charlie said doggedly. “Two and a half billion tons of carbon per year, that’s got to make a difference, it’s just plain physics. You could say it isn’t for sure that the sun will come up tomorrow morning, and in a limited sense you’d be right, but I’ll bet you the sun will come up.”

“Don’t be tempting me to gamble now.”

“And besides, Mr. President, there’s also what they call the precautionary principle, meaning you don’t delay acting on crucial matters when you have a disaster that might happen, just because you can’t be one hundred percent sure that it will happen. Because you can never be one hundred percent sure of anything, and some of these matters are too important to wait on.”

The President frowned at this, and Strengloft interjected, “Charlie, you know the precautionary principle is an imitation of actuarial insurance that has no real resemblance to it, because the risk and the premium paid can’t be calculated. That’s why we refused to hear any precautionary principle language in the discussions we attended at the UN. We said we wouldn’t even attend if they talked about precautionary principles or ecological footprints, and we had very good reasons for those exclusions, because those concepts are not good science.”

The President nodded his “So That Is That” nod, familiar to Charlie from many a press conference. He added, “I always thought a footprint was kind of a simplistic measurement for something this complex anyway.”

Charlie countered, “It’s just a name for a good economic index, Mr. President, calculating use of resources in terms of how much land it would take to provide them. It’s pretty educational, really,” and he launched into a quick description of the way it worked. “It’s a good thing to know, like balancing your checkbook, and what it shows is that America is consuming the resources of ten times the acreage it actually occupies. So that if everyone on Earth tried to live as we do, given the greater population densities in much of the world, it would take fourteen Earths to support us all.”

“Come on, Charlie,” Dr. Strengloft objected. “Next you’ll be wanting us to use Bhutan’s Gross Domestic Happiness, for goodness’ sake. But we can’t use little countries’ indexes, they don’t do the job. We’re the hyperpower. And really, the anticarbon-dioxide crowd is a special interest lobby in itself. You’ve fallen prey to their arguments, but it’s not like CO2 is some toxic pollutant. It’s a gas that is natural in our air, and it’s essential for plants, even good for them. The last time there was a significant rise in atmospheric carbon dioxide, human agricultural productivity boomed. The Norse settled Greenland during that period, and there were generally rising lifespans.”

“The end of the Black Death might account for that,” Charlie pointed out.

“Well, maybe rising CO2› levels ended the Black Death.”

Charlie felt his jaw gape.

“It’s the bubbly in my club soda,” the President told him gently.

“Yes.” Charlie rallied. “But a greenhouse gas nevertheless. It holds in heat that would otherwise escape back into space. And we’re putting more than two billion tons of it into the atmosphere every year. It’s like putting a plug in your exhaust pipe, sir. The car is bound to warm up. There’s general agreement from the scientific community that it causes really significant warming.”

“Our models show the recent temperature changes to be within the range of natural fluctuation,” Dr. Strengloft replied. “In fact, temperatures in the stratosphere have gone down. It’s complex, and we’re studying it, and we’re going to make the best and most cost-effective response to it, because we’re taking the time to do that. Meanwhile, we’re already taking effective precautions. The President has asked American businesses to keep to a new national goal of limiting the growth of carbon dioxide emissions to one-third of the economy’s rate of growth.”

“But that’s the same ratio of emissions to growth that we have already.”

“Yes, but the President has gone further, by asking American businesses to try to reduce that ratio over the next decade by eighteen percent. It’s a growth-based approach that will accelerate new technologies, and the partnerships that we’ll need with the developing world on climate change.”