Who to blame for global warming?

The world's richest countries are increasingly outsourcing their carbon pollution to China and other rising economies, according to a draft UN report.
Outsourcing of emissions comes in the form of electronic devices such as smartphones, cheap clothes and other goods manufactured in China and other rising economies but consumed in the US and Europe.
A draft of the latest report from the Intergovernmental Panel on Climate Change, obtained by the Guardian, says emissions of carbon dioxide and the other greenhouse gases warming the planet grew twice as fast in the first decade of the 21st century as they did during the previous three decades.
Much of that rise was due to the burning of coal, the report says. And much of that coal was used to power factories in China and other rising economies that produce goods for US and European consumers, the draft adds.
Since 2000, annual carbon dioxide emissions for China and the other rising economies have more than doubled to nearly 14 gigatonnes a year, according to the draft report. But about 2 GT a year of that was produced making goods for export.
The picture is similar for other rising economies producing goods for export, the report finds.
"A growing share of CO2 emissions from fossil fuel combustion in developing countries is released in the production of goods and services exported, notably from upper-middle-income countries to high-income countries," the report says.
There is now growing debate about how to assign responsibility for emissions generated producing goods that were made in one country but ultimately destined for another.
"The consumers that are importing those goods have some responsibility for those goods that are happening outside of our boundaries," the report said.
The 29-page draft, a summary for policy makers, was dated 17 December. An edited version is due to be published in Germany in April.