By Lord Hunt & Terry Townshend - We have learnt to expect surprises at UN climate change summits. At Durban, a year ago, there was the unexpected, but welcome, agreement to begin negotiations on a new legally binding instrument involving all major emitters of greenhouse gases, to be finalised by 2015, and to take effect in 2020.
By Lord Julian Hunt - One of the most striking changes at Rio+20, compared to the original 1992 Earth Summit, is the extensive discussion of population issues.
More than 100 Heads of State and government gathered on Wednesday in Rio de Janeiro for the start of the United Nations Conference on Sustainable Development (Rio+20), which seeks to shape new policies to promote global prosperity, reduce poverty and advance social equity and environmental protection.