Oil giant comes in from the cold

Exxon funded global warming denial for years. Yesterday, in an astonishing U-turn, it called for the imposition of green taxes.

The boss of ExxonMobil, the world’s largest oil company, has called for a carbon tax to tackle global warming, marking a volte-face by the firm once described by Greenpeace as Climate Criminal No 1. Assailed from all sides by scientists and a new cadre of US politicians, led by the President-elect, Barack Obama, the landmark concession by Rex Tillerson represents a nod to realpolitik after years when the company denied the existence of man-made global warming.


Exxon had already dropped its funding of lobby groups which deny the science of climate change and begun to take a softer public line, but even Mr Tillerson admitted that propounding a carbon tax had stuck in the craw until recently. However, with European-style “cap and trade” rules governing carbon emissions moving up the agenda in the US, a carbon tax may be the least worst option, he said. Environmental groups gave a sceptical response to Exxon’s U-turn, calling it a deliberate attempt to torpedo the movement for outright carbon caps and any early switch to alternative energy. “A carbon tax is also the most efficient means of reflecting the cost of carbon in all economic decisions