Shell's crude comparisons

As an army of Shell lawyers gathers in New York to defend the company on charges of gross environmental and human rights abuses going back years in the Niger delta, the company takes another hit in London. Research by four environmental organisations, including Greenpeace and Platform, calculates that the company - which insists it is leading the corporate debate on climate change - has the highest carbon intensity of all the top international oil companies. The problem? Its reliance on Nigerian crude, which is associated with huge levels of gas flaring, and its giant investments in Canadian tar sands.