According to a study by the Grantham Research Institute on Climate Change and the Environment at the London School of Economics that is being covered by the Guardian, "UK climate change policies have not harmed economy."

I see. And what exactly has happened to the UK's economy since the 2008 Climate Change Act? Well, it has gone directly into the toilet.

Here are real per capita GDP trends for each of the G7 nations since 2007 up to the latest comprehensive year available (2012).

Italy is barely beating out the UK for a master class in how to make your economy go backwards. Over this period, real per capita GDP in the UK has declined by 7 percent. But of course, we all must repeat that there is no chance the UK's climate policies harmed its economy.

So the UK's economy is in freefall since "The Climate Change Act 2008." Nothing to see here. Everyone move along and let us keep pretending all is fine.

How was the UK's economy doing in the five years prior to "The Climate Change Act 2008"? Well, real per capita GDP grew by 14 percent over this timeframe, leading the entire G7, and the nearest competitor was the USA with a 10 percent increase.

The UK's economic about-face in the pre- and post-periods around "The Climate Change Act 2008" is clear, and it represents the most dramatic change in any G7 economy over the past decade.

Correlation is clearly not causation, and innumerable factors influence a national economy. But the evidence is not promising for the UK's climate change policies. In the five years before "The Climate Change Act 2008," the UK had the fastest growing G7 economy by a long shot. In the five years since, it is the second worst performing member of the club. Perhaps more effort should go into connecting the dots on these pieces of information?

The UK also currently has the second lowest per capita GDP among the G7. You would think this nation's residents would want the economy to grow, rather than remain the poor member (along with Italy) of the club, and getting poorer? In 2007, in the year before "The Climate Change Act 2008," the UK had the fourth highest per capita GDP in the G7. Now it has slipped to sixth place, with Japan and France passing it -- actually, just not declining as much -- along the way.