UN Climate Talks in Dubai Spark Agenda Spat and Tough Questions.

Diplomats from almost 200 countries have resumed talks on tackling global warming in Bonn, Germany, with the aim of shaping a deal that might put the world on track to prevent a dangerous increase in temperatures. The U.N.'s top climate official, Simon Stiell, called for deep cuts in fossil fuel use, saying that limiting global warming to 1.5 degrees Celsius will require a phaseout of fossil fuels. Stiell welcomed the steep rise in renewable energy production but said that deep cuts in fossil fuel production and consumption are needed, and that we are not seeing them.