The business of climate change

As a technology company, Unisys is not affected as much as other sectors - oil and cars, for example - in the debate on climate change.

Joseph McGrath, the chief executive of Unisys, says his company has not taken an official line either way on climate change. But as far as he is concerned, he is in no doubt - unlike George Bush - that global warming is a scientific fact.

"I am surprised by the attitude of the US government," he told Guardian Unlimited at a business conference. "The science has proved it."