UNEP

Top executives from some of the world's largest businesses meet in South Korea to reiterate commitment to more sustainable business models

Working group to assess the viability of launching a World Environment Organisation

As Republican senators challenge climate science consensus, UN Secretary General urges leaders to resist climate sceptics' attempts to derail international negotiations

Group representing $13 trillion worth of assets urges leaders to accelerate the rollout of low carbon policies

Flurry of good news dominates start of summit, as South Africa announces emissions target and Obama signals he will attend talks' conclusion

Uncertainty over investing in green technologies more dangerous than lack of Copenhagen treaty says Achim Steiner, the head of the UN environment programme

But renewable energy funding needs to double to $500bn annually to limit global warming, UN study warns

UN investigates possible ban on nine hazardous chemicals, including widely used pesticides and flame retardants

State Department outlines support for international efforts to curb emissions of potent greenhouse gas

Report calls for global crackdown on food waste and expansion of organic farming to help tackle impending shortages