G8 summit sets new global warming targets

Leaders of the G8 leading industrial countries have agreed to try to limit global warming to just 2 degrees celsius or 3.6 degrees farenheit above pre-industrial levels by 2050.



The summit, in the Italian city of L\'Aquila, has also set tough new targets for carbon emissions considered necessary to achieve the goal.



Developed nations are to cut carbon emissions by 80 per cent by 2050, to allow a global 50 per cent reduction by the same date.



Analysts say there is no indication of how the targets, or costs, will be met.



Developed nations have been criticised for ducking interim goals, and difficult talks still lie ahead as negotiators try to firm up the ambitious goals.



Additionally, BBC reports say the cut in carbon emissions is only a target and will need the co-operation of rapidly industrialising countries such as China and India.