An initial image from outside the Swedish Parliament in August 2018

From a one person protest outside the Swedish Parliament last year, to mass marches & a global #ClimateStrike, @GretaThunberg has single-handedly changed the world. Simply remarkable. pic.twitter.com/R5steO2kRX

— Guy Verhofstadt (@guyverhofstadt) September 21, 2019

And an initial video posted to Thunberg’s Twitter feed that month

Fridays for future. The school strike continues! #climatestrike #klimatstrejk #FridaysForFuture pic.twitter.com/5jej011Qtp

— Greta Thunberg (@GretaThunberg) September 16, 2018

Testifying to Congress on September 18, 2019

‘I want you to unite behind the science. And then I want you to take real action.’ — @GretaThunberg shared this powerful message while testifying to Congress about climate change pic.twitter.com/JiqPve1WBu

— NowThis (@nowthisnews) September 21, 2019

Exclusive: @GretaThunberg delivered this stirring wake-up call to Congress, urging leaders to treat ‘this crisis like the existential emergency it is’ pic.twitter.com/gyexULfSpO

— NowThis (@nowthisnews) September 21, 2019

In a video released by https://nowthisnews.com/

‘We are living in the beginning of a mass extinction … but we can still fix this.’ — @GretaThunberg’s powerful new video explains how we can beat the climate crisis pic.twitter.com/83bogBEwxT

— NowThis (@nowthisnews) September 20, 2019

Speaking in Battery Park, New York at the beginning of the Climate Strike on September 20, 2019

An estimated 250,000 people gathered in New York to hear Greta Thunberg speak.

To wild cheers – followed by chants of "Greta! Greta!" – she told them: "We will make them hear us" https://t.co/jUfVHc1LvK pic.twitter.com/CVIllJ1XbR

— Sky News (@SkyNews) September 21, 2019

The scale of what Greta Thunberg is achieving is genuinely incredible. This is her, sat alone outside the Swedish Parliament, Aug 2018 the first school strike. Today she's spearheading a Climate Strike of millions of people, across 7 continents & 150+ countries. At 16. Legend! pic.twitter.com/SpyVPpWbfN

— Mohamad Safa (@mhdksafa) September 21, 2019