Green leader Zack Polanski wants to fight by-election

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Green Party leader Zack Polanski has announced that he will put himself forward as the Green Party candidate for the Holborn and St Pancras by-election, triggered by Sir Keir Starmer's resignation. Former Green Party leader Caroline Lucas joins us live. Also, the UN Meteorological Organisation warns of a 'supersized' El Nino coming our way. One of the architects of the 2015 Paris Accords, Tom Rivett-Carnac, tells us what needs to be done globally to be prepared. And why St Paul's Cathedral is going to be hosting nightclub events.