U.K., Sept. 16 -- Sustainability has moved up the business league table in dramatic fashion. With its roots in ethical business and corporate social responsibility, it has turned into a financial growth area as consumers become more aware of sustainable credentials, regulators and governments shoot for ecological targets and consumption threatens to outstrip resources.

Sometimes, it's just good business too.

Sustainability has broadened in scope. Environmental threats now include weather systems and sea levels on top of extinction and pollution. Social, economic and governance challenges (race, gender, poverty, health) have moved into the mainstream.

If there is any doubt that sustainability is a business imperative comparable to technol...