If you've never heard of Charles or David Koch, I wouldn't blame. While they do run the second largest private company in the US, they don't spend much money advertising the fact.

These oil barons do however spend a lot of money every year on organizations like Americans for Prosperity who attack the science of climate change and deny that it is happening.

Here's a backgrounder on Koch just released yesterday by Climate Science Watch.

And here's Greenpeace's "Climate Crime Unit" on the hunt for Charles and David Koch:

Hours before President Obama leaves for the Copenhagen climate summit, Greenpeace activists deployed an emergency response team to declare the U.S. Chamber of Commerce headquarters a “Climate Policy Hostage Area,” and a “Global Warming Crime Scene.” 

There will be a lot of noise around the world on Sept. 21st when people all over the globe - from New York to Guatemala to Dakar - join together in a Global Climate Wake Up Call.

Organized by the amazing folks at Avaaz, Oxfam, Greenpeace and 350.org the Global Wake-Up Call , will see people from all walks of life get together in public places to sound the alarm and urge our political leaders to stand up and take bold action at the Copenhagen Climate Treaty Summit scheduled for December of this year.

These will be peaceful, spontaneous "flash mobs" in public places where people will sound the alarms on their mobile phones, flood their governments with phone calls urging climate action, and make a tremendous noise. The images, sounds, and videos will be stitched together overnight for presentation to world leaders at the United Nations the next day.

To say that the Copenhagen Summit is a key moment in our history would be the understatement of the century. At this meeting our government representatives will decide the path we will take for the next decade: Will we continue to allow the unabated burning of dirty fossil fuels like coal and oil? Or will go down a path that starts to reduce this over reliance on fossil fuels and begins to take full advantage of clean, healthy, cheap and unlimited power sources like the sun and the wind?

Sometimes, toughing out a difficult relationship can be worth it in the end - as is the case with Greenpeace and tissue giant, Kimberly-Clark.

Under the terms of a landmark settlement reached last Friday, U.S. financing agencies will no longer be able to ignore the climate change repercussions of their actions.

Close to seven years and several bruising court battles later, a coalition of environmental groups and eco-minded cities have succeeded in forcing the Export-Import Bank and Overseas Private Investment Corporation (OPIC) to do the unthinkable: acknowledge the reality of climate change and obey the law.

Have you been feeling a little cynical about the "clean coal" lobby's claims that we can simply and neatly bury our greenhouse gas emissions and forget about them?

A comprehensive, in-depth report was released yesterday by Greenpeace International called "False Hope: Why Carbon capture and storage won't save the climate." The bottom line, as I've written here on DeSmog before, is that the timeline is just too long for Carbon Capture and Sequestration to have the desired affect on greenhouse gas emissions.