Just as barrels of oil differ in their impact so to do different companies. Apparently Shell wins the prize for the worst offender when it comes to producing the highest impact oil.
Read more about the differing impacts of oil depending on where it is sourced and what company produces it over at GreenPepper. Here is an excerpt;
"Shell tops the list for three reasons:
- Its reliance on Nigerian crude oil, which is associated with huge levels of wasteful gas flaring
- Its investments in highly energy intensive liquefied natural gas
- Its massive gamble on Canada’s oil-bearing tar sands, for which the extraction process is so energy intensive that it produces up to five times more greenhouse gases than conventional oil
The bad news for Shell shareholders is that 30% of its total resources are now in tar sands. As the US moves to introduce carbon control legislation, and the world looks towards December’s Copenhagen summit for action to limit climate change, Shell is fighting a determined rearguard action - taking a lead in industry lobbying against similar measures being proposed by the Eurpean Union."