He promoted the idea that the rightness or wrongness of an action depended on its consequences, an ethical theory known as utilitarianism.

ECONOMIST: John Harsanyi

The potential side effects of geoengineering are presently not well understood and will likely include unintended ecological consequences, which in turn can pose important political, social, and ethical challenges.

UNESCO: MEDIA SERVICES

Meanwhile, the banker chosen by St Paul's Cathedral to head a group looking to reconnect "the financial with the ethical" has warned that the market economy has "managed to slip its moral moorings" with "disastrous consequences".

BBC: Ed Miliband warns of St Paul's protest 'danger signals'