COP26: Countries must commit to net zero as soon as possible

Business Secretary Alok Sharma says that all countries must commit to reach net zero carbon emissions "as soon as possible." The UK will host the 26th UN Climate Change Conference of the Parties (COP26) in Glasgow in November. Mr Sharma, who is COP26 President, was speaking in the City of London at the launch of Mark Carney's climate finance strategy for the conference.