Reuters: Legislators from around the world called on G8 nations on Friday to take the lead on climate change by slashing their carbon output and promising hundreds of billions of dollars to help poorer countries adapt. One hundred parliamentarians from rich and poor countries gathered in Italy — where the G8 club of industrial nations is due to meet next month — said time was running out to clinch a deal before a make-or-break UN climate summit in Copenhagen. The December summit is …