A carbon "tax" will raise £100,000 across government departments in the UK to compensate for the 10,000 tons of carbon dioxide caused by extra air travel associated with Britain's presidency of the G8 and the summit at Gleneagles last year, The UK-based The Independent newspaper reports. The money will go towards environment projects in the developing world over the next three years to offset the harmful effects of the air travel by G8 leaders, but that is seen as a small sum to pay for global warming.