Is the UN-sponsored climate summit in the Mexican city of Cancun simply lip service to the fight against climate change?
No major agreements have been reached as representatives from more than 190 nations prepare to wrap up the summit on Friday.
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Some delegates say it will be hard to secure anything other than a symbolic deal because of divisions between nations over how to cut carbon emissions.
But UN representatives say the Cancun talks are providing building blocks for the future through agreements on issues such as technology transfer to poorer nations and REDD - 'Reducing Emissions from Deforestation and forest Degradation'.
On Thursday, we will be talking to Georgina Kessel Martínez, Mexico's energy secretary, Kandeh Yumkella, the UN Industrial Development Organisation director-general, and Patrick Michaels, an American climatologist.
You can join the show with your questions and comments. Watch the show live on Thursday, December 9, at 1630GMT. Repeats air at 2030GMT, and the next day at 0130GMT.