The world community has rallied around the goal of limiting global warming to two degrees Celsius (3.6 degrees Fahrenheit), but how to get there is becoming a headache.
UN climate talks were to resume in Bonn on Monday, tasked with sculpting a historic deal on greenhouse gases due to be sealed in Paris little more than six months from now.
German Chancellor Angela Merkel and French President Francois Hollande jointly pledged Tuesday to do their utmost to ensure an "ambitious" UN deal to combat climate change is reached this year.
The European Union's foreign policy chief said Tuesday she's confident the EU and China can agree to a common approach on climate change ahead of crucial carbon reduction talks in Paris this year.
A rough deadline for Tuesday saw only 33 out of 195 countries submit pledges for tackling greenhouse gases under UN climate talks scheduled to conclude just over eight months from now.
Negotiators haggled on the penultimate day of UN climate talks in Geneva Thursday over how best to streamline the bloated draft of a long-awaited pact the world's nations must sign in December.
A carbon-curbing deal struck in Lima on Sunday was a watered-down compromise where national intransigence threatened the goal of a pact to save Earth's climate system, green groups said.
Canada will only impose regulations to cut carbon emissions from its oil and gas sector—its top source of emissions—if and when the United States moves to do the same, the prime minister said Tuesday.
India, the world's third-largest greenhouse gas emitter, said Thursday it is committed to tackling global warming but vowed to protect its interests at the latest round of UN climate talks in Lima.
With temperature data showing 2014 currently tied for the hottest year on record, the U.N. weather agency on Wednesday rejected claims that global warming has paused.