"Since last summer. I've been repeating these numbers over and over again in almost every speech. But honestly, I don't think I have once seen any media outlets or person in power communicate this and what it means. I know you don't want to report about this. I know you don't want to talk about this,'' Thunberg said. ''But I assure you I will continue to repeat these numbers until you do.''
Several young activists have traveled to the Swiss ski resort of Davos this year, following in Thunberg's footsteps.
Among the "climate heroes" being celebrated by the WEF are Irish teen scientist Fionn Ferreira, who created a solution for preventing micro plastics from reaching oceans.
They also include South African climate activist Ayakha Melithafa, 17, and Canadian Autum Peltier, who has been advocating for water conservation since she was 8 years old.