"National promises to cut emissions as part of preparations for a United Nations summit at the end of the year would cap global warming at the unacceptably high level of 3 degrees Celsius, the U.N.'s climate boss said on Tuesday.

The talks in Paris, starting on Nov. 30, will seek a global deal to curb warming, which scientists say needs to be limited to 2 degrees Celsius (3.6 degrees Fahrenheit) to avoid the most devastating consequences in the form of droughts and rising sea levels.

U.N. [FCCC] Executive Secretary Christiana Figueres said so far 62 nations had submitted promises, covering around 70 percent of global emissions."

Barbara Lewis reports for Reuters September 16, 2015. [2]