Carbon reduction: is it good for business?

Are big companies altruistic? And by "altruistic", I mean the sort of altruism portrayed by Ethan Rae in The Human Race. Ethan gives away 25 per cent of his annual net profits to good causes such as carbon reduction, which, over a two-year period, amounts to more than £250 million. It's a lot of money, but Ethan has his reasons and, importantly, the wherewithal to do it. His company, Rae Holdings, is private so he can pretty much do what he wants. In other words, he isn't...