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Leaders of the world's richest nations meeting at this week's G8 summit in Italy are likely to agree to cut greenhouse gas emissions by 50% by 2050 with rich nations reducing them by 80%. Are these realistic targets?



The group is expected to seek a more co-ordinated position on climate change including promoting new technology and cleaner energy and limiting temperature increases.

Environmental campaigners have accused the G8 of willing the ends on climate change but not willing the means.

In December the UN conference to seal a new global climate deal will take place in Copenhagen, here world leaders will have to come up with a successor to the Kyoto Protocol.

How realistic is it to cut greenhouse gas emissions to these levels? Should our focus be on new technology? Should we stop using fossil fuels? How can a successor to the Kyoto Protocol be developed to ensure a sustainable future?

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BBC

PLEASE NOTE THIS IS NOT A DEBATE ON WHETHER OR NOT YOU BELIEVE IN GLOBAL WARMING OR THE CAUSES THEREOF.