The last chapter was today in Hamburg.In the German city, thousands of students demonstrated together, part of a global community increasingly threatened by climate change that is now undermining not only their future, but also their present.A march, that of the German port city, symbolically led by an exceptional little leader, namely Greta Thunberg, the Swedish teenager who did not hesitate to challenge the greats of the earth on the issue of global warming.School strike week 28. In Hamburg with @Luisamneubauer #climatestrike #fridaysforfuture #schoolstrike4climate pic.twitter.com/XhE3WtVS5DAn idea, that of the Friday student strike against the climate that comes directly from the mind and determination of this teenager.And the protests are slowly catching on, from the north to the south of the planet.After the demonstrative actions carried out outside the Swedish Parliament, on 16 January Greta ended up under the eyes of the world for her speech in Davos in which she warned the world's leaders: "I don't want to see you hopeful, I want you to be afraid, I want that you try it every day.And I want you to act."A threat also evoked by the demonstrators in Hamburg with slogans such as "March now or swim tomorrow" a clear reference to the rise in sea levels that global warming is causing.And the commitment of the young Swedish activist seems to be starting to bear fruit with new protests already planned in many cities around the world (below you can take a look at the map with the different initiatives) and a global strike scheduled for March 15th.And that of these students seems to be a real race against time, consumed in the silence of world politics.Scientists continue to warn about the effects that climate change is already having and underline that we have just 12 years to limit its consequences, which could be devastating.Today's teenagers could find themselves in their late adulthood with a planet where the temperature is 2 to 4 degrees higher than today.A scenario from hell, with truly unpredictable outcomes.Don't want to miss the latest news?Follow us also on Facebook, Instagram and Twitter!What's happening at the rederendum platform event...The real news, on the day of the garrison to ask with...Marco Cappato is an Italian politician and activist, treasurer...Lorenzo Mineo is an activist who deals with civil liberties and is part of the Giunta...