Reuters: Leaders from a group of 43 countries most vulnerable to the impacts of climate change called on the first day of U.N. climate talks for a new deal that puts the world on track to limit global warming below 1.5 degrees Celsius.
To achieve that goal - which is tougher than the expected 2 degree Celsius cap at the talks - would require cutting carbon emissions to zero and adopting 100 percent renewable energy by 2050, the nations said.
Meeting it would demand much higher ambition at the talks...