John,
Here is an article that I think your readers will find interesting.
It is a frequently asked question.
RealClimate: How do we know that recent CO2 increases are due to …
Related…
Study suggests rising CO2 in the past caused global warming
This article tracks the increase in atmospheric CO2 for the last 50 years. It is also quite interesting.
And this for the last 650,000 years:
Carbon Dioxide Rate is at Highest Level for 650000 Years
And this is just a general information article:
Carbon dioxide in Earth’s atmosphere – Wikipedia, the free …
Royal Dutch Shell conspired directly with Hitler, financed the Nazi Party, was anti-Semitic and sold out its own Dutch Jewish employees to the Nazis. Shell had a close relationship with the Nazis during and after the reign of Sir Henri Deterding, an ardent Nazi, and the founder and decades long leader of the Royal Dutch Shell Group. His burial ceremony, which had all the trappings of a state funeral, was held at his private estate in Mecklenburg, Germany. The spectacle (photographs below) included a funeral procession led by a horse drawn funeral hearse with senior Nazis officials and senior Royal Dutch Shell directors in attendance, Nazi salutes at the graveside, swastika banners on display and wreaths and personal tributes from Adolf Hitler and Reichsmarschall, Hermann Goring. Deterding was an honored associate and supporter of Hitler and a personal friend of Goring.
Deterding was the guest of Hitler during a four day summit meeting at Berchtesgaden. Sir Henri and Hitler both had ambitions on Russian oil fields. Only an honored personal guest would be rewarded with a private four day meeting at Hitler’s mountain top retreat.
IN JULY 2007, MR BILL CAMPBELL (ABOVE, A RETIRED GROUP AUDITOR OF SHELL INTERNATIONAL SENT AN EMAIL TO EVERY UK MP AND MEMBER OF THE HOUSE OF LORDS: 
MORE DETAILS:
A head-cut image of Alfred Donovan (now deceased) appears courtesy of The Wall Street Journal.
