BBC News:- The highly anticipated COP26 climate change summit begins later in the Scottish city of Glasgow. Delegates from about 200 countries will be there to announce how they will cut emissions by 2030 and help the planet. With the world warming because of fossil fuel emissions caused by humans, scientists warn that urgent action is needed to avoid a climate catastrophe. UK Prime Minister Boris Johnson said the summit will be the 'world's moment of truth'. Speaking before the two-week conference, he urged leaders to make the most of it: 'The question everyone is asking is whether we seize