Climate change warning at UN Cancun summitClimate change warning at UN Cancun summit. Ministers have begun talks at the UN climate summit in Cancun amid warnings that time is running out to curb climate change and save the UN process.
The top UN climate official, Christiana Figueres, said the fate of low-lying islands should be "a wake-up call".
Big differences remain between nations on issues such as cutting emissions, protecting from climate impacts, and inspections of others' emission curbs.
It is unclear whether those issues can be resolved in the three days left.