(ANSA) - ROMA, 24 SET - epa09485470 Swedish climate activist Greta Thunberg delivers a speech at the Fridays For Future global climate action day in Berlin, Germany, 24 September 2021. Climate activists of Fridays For Future call for socially fair and consistent measures to limit climate heating to 1.5 degrees Celsius ahead of German federal elections, that take place on 26 September 2021. The young activists are planning hundreds of protests and demonstrations worldwide during a 'climate strike' on 24 September 2021. EPA/CLEMENS BILAN (ANSA).