Researchers in the US have developed innovative new software that maps carbon emissions at street level.
According to a report by the BBC, the system, known as Hestia, combines information from public databases with traffic simulations and energy consumption models.
Scientists say that Hestia could help identify the most effective places to cut emissions. Once those cuts have been made, the system can verify their effect. Verification is also a hugely contentious issue at international negotiations on a global climate treaty.
Many developed countries are concerned that any cuts in carbon agreed by developing nations might not actually happen.
The researchers believe that the system can be used to give greater credibility to carbon trading.
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