Timeline
Eighteen dated events, from Stockholm 2003 to the present — each traceable to a public record.
2003-01-03 — Born in Stockholm
Greta Tintin Eleonora Ernman Thunberg is born in Stockholm, Sweden, to Malena Ernman and Svante Thunberg.
2018-05 — Wins a climate essay competition
Thunberg wins a climate-themed writing competition run by the Swedish newspaper Svenska Dagbladet — one of her first public appearances as a writer on climate.
2018-08-20 — The school strike begins
She sits outside the Swedish parliament with a hand-painted sign reading “Skolstrejk för klimatet” (school strike for climate), skipping school to protest until the 9 September general election — then extends the strike to every Friday.
2018-11 — TEDxStockholm
Her talk “School strike for climate – save the world by changing the rules” at TEDxStockholm spreads the strike’s message to a wider audience.
2018-12-12 — COP24, Katowice
She addresses the UN climate summit in Katowice, Poland: “You say you love your children above all else, and yet you are stealing their future in front of their very eyes.” (See UN Speeches.)
2019-01-25 — “Our house is on fire” at Davos
Addressing the World Economic Forum’s Annual Meeting in Davos, Switzerland, she says: “Our house is on fire… I want you to panic. I want you to act as if our house is on fire. Because it is.” (See Davos.)
2019-03-15 — First global climate strike
The first coordinated Global Climate Strike for Future takes place; organizers report participation in more than 100 countries, with estimates of well over a million participants. (Figures are organizer estimates; independent counts vary.)
2019-04-16 — European Parliament, Strasbourg
She tells the European Parliament that around 2030 the world will be “in a position where we set off an irreversible chain reaction beyond human control.” (See UN Speeches.)
2019-08-14 — Sails for New York
Thunberg departs Plymouth, England, aboard the zero-emission racing yacht Malizia II, crossing the Atlantic to attend the UN summits in New York — a two-week voyage to avoid the emissions of flying. (See Transatlantic Voyage.)
2019-09-23 — “How dare you” at the UN
She addresses the UN Climate Action Summit in New York: “How dare you. You have stolen my dreams and my childhood with your empty words… The eyes of all future generations are upon you.” The speech is viewed worldwide within hours. (See UN Speeches.)
2019-12 — COP25 and TIME Person of the Year
She attends COP25 in Madrid (relocated from Santiago, Chile) and is named TIME’s Person of the Year — the youngest ever recipient, at 16.
2020-01-21 — Davos again: “Our house is still on fire”
Returning to the World Economic Forum, she says: “Our house is still on fire. Your inaction is fueling the flames by the hour.” (See Davos.)
2021-11 — COP26, Glasgow
At a COP26 fringe rally she calls the summit’s pledges “blah, blah, blah” and says: “Change is not going to come from inside there. That is not leadership — this is leadership.” (Reported by multiple outlets, 2021-11-05.)
2022-10 — Publishes “The Climate Book”
Her book “The Climate Book” is published — a compendium of short essays on the climate crisis by scientists and writers, assembled by Thunberg.
2023-01 — Detained at Lützerath
She is briefly detained by German police at a protest against the expansion of the Garzweiler coal mine at Lützerath, Germany, and released the same day. (See Later Activism.)
2024-02 — Cleared in London
A London court clears her of a public-order offence arising from an October 2023 protest at an oil-and-gas industry conference, ruling police had no power to impose the conditions breached. (See Later Activism.)
2025-06-09 — Madleen flotilla intercepted
Israeli forces intercept the Freedom Flotilla Coalition aid ship Madleen, with Thunberg among 12 aboard, and deport them. (See Gaza Flotilla.)
2025-10-06 — Global Sumud Flotilla deportations
After the Global Sumud Flotilla is intercepted in early October 2025, Thunberg is among the activists deported from Israel to Greece. (See Gaza Flotilla.)
Source notes
Dates are as reported in contemporary coverage and official transcripts (see Sources). Participant figures for strikes are organizer estimates, labeled as such. Swedish, German, and UK legal outcomes are as reported by news outlets. Events from 2024–2026 are reported from AP/Reuters/PA wire coverage as available; where reporting is thin, the event is described in neutral terms on its dedicated page.