hello and welcome. our continued coverage here of cop26, here in glasgow. the summit billed as a make or break moment a test of whether countries can act together to limit global warming is getting underway. we have the close of the opening ceremony in the last couple of minutes. 7 we had. 120 world leaders are here to begin their speeches to delegates and the uk as the host is front and centre of this huge gathering. in advance of the conference s opening, the prime minister boris johnson has warned that humanity has run down the clock on climate change and it s now one minute to midnight . ourfirst report comes from our science correspondent rebecca morelle. and a warning the following report contains flashing images. sweeping into glasgow, leaders from around the world, ready for make or break talks