going to help very much, it's the vaccine that's going to stop this virus in its tracks. we will have to leave it there. thank you very much forjoining us, professor. a reminder of the headlines. swedish activist greta thunberg has branded the cop26 climate conference a "failure", describing it as a global greenwashing festival. marilia mendonca, one of brazil's most popular singers dies in a plane crash at the age of 26. the un security council has expressed deep concern about the intensifying conflict in ethiopia. it comes as nine rebel groups formed a new alliance, aimed at removing the current government of prime minister abiy ahmed. the year—long war has left over 400,000 people facing famine—like conditions. our africa correspondent, catherine byaru hanga has this report. in washington, dc, a coalition