Britain's Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive to attend an evening reception to mark the opening day of the COP26 summit at the Scottish Event Campus (SEC) on November 1, 2021 in Glasgow, United Kingdom. 2021 sees the 26th United Nations Climate Change Conference. The conference will run from 31 October for two weeks, finishing on 12 November. It was meant to take place in 2020 but was delayed due to the Covid-19 pandemic.