Now or later and later will win

From the of course they did department:
Scientists Fault Climate Exhibit Changes

Some government scientists have complained that officials at the Smithsonian's National Museum of Natural History took steps to downplay global warming in a 2006 exhibit on the Arctic to avoid a political backlash, according to documents obtained by The Washington Post.

The museum's director, Cristián Samper, ordered last-minute changes to the exhibit's script to add "scientific uncertainty" about climate change, according to internal documents and correspondence.

I have a degree in physics and I know that adding greenhouse gases to the atmosphere will make a greenhouse - warm things up. The problem is that there are thousands of climate variables and interrelationships of which we maybe know about 10 percent and understand 10 percent of those. But it doesn't really matter. There are no substitutes for oil. Thomas Malthus was right, he just didn't anticipate oil. We can reduce oil consumption now and millions will die or we can wait until the oil is gone and millions will die. What decision do you think the politicians will make? Of course millions are going to die anyway. The major problem with climate change isn't so much that it will be warmer here and colder here but that it will be different. Our civilization is built on the climate we have now.