You wrote: "Time spent protesting on the streets is time away from the halls of power." Greta Thunberg's words carry weight in the halls of power thanks to the millions of young people and older allies who have protested on the streets with her. When Greta said "How dare you?" at the UN conference in New York in September 2019, she expressed the sense of urgency and frustration shared by her fellow campaigners. I hope and expect to see more millions at the coming Global Day of Action on Saturday 6 November, during the COP26 Conference in Glasgow. The organisers are calling on climate conscious people of all generations to take part. Together we can make a difference.