Oil: Tar sands less damaging than coal, insists Shell
· Profits from controversial source increase by 74%
· Group makes $7.9bn as Exxon hits record $11.7bn
* Terry Macalister
* The Guardian,
* Friday August 1 2008
Shell warned environmentalists and ethical investors yesterday that failure to exploit tar sands and other unconventional oil products would worsen climate change because it would lead to the world burning even more carbon-heavy coal.