Few teenagers have reshaped global conversation the way Greta Thunberg has — since sitting alone outside the Swedish Parliament in August 2018, she has become the defining face of youth climate activism and a lightning rod for both praise and criticism. This article breaks down her medical diagnoses, how she rose to fame, how she funds her activism, the controversies that have followed her, and what comes next.
Born: January 3, 2003 ·
Age: 21 (as of 2024) ·
Instagram followers: 17 million ·
Started school strike: August 20, 2018 ·
Diagnosed with: Asperger’s syndrome, OCD, selective mutism (later self-identifies as autistic and bipolar)
Quick snapshot
- Diagnosed with Asperger’s syndrome, OCD, and selective mutism at age 11 (PMC (National Institutes of Health))
- Started school strike on August 20, 2018 (Wikipedia – Fridays for Future)
- Addressed UN Climate Action Summit in 2019 (Wikipedia)
- David Attenborough praised her activism (BBC News profile)
- Exact net worth — not publicly disclosed
- Marital status — not confirmed
- Future plans after leaving school in 2023
- Exact number of Instagram followers — not independently verified
- 2018: First school strike outside Swedish Parliament (Wikipedia)
- 2019: “How dare you” UN speech (Wikipedia – Fridays for Future)
- 2023: Ended school strikes after graduation (Wikipedia)
- Continues activist speaking and writing
- Further legal challenges from protest arrests
- Potential new book projects or documentary appearances
6 key facts, one pattern: Greta Thunberg’s journey from a single protester to a global icon is built on early diagnosis, family support, and a relentless focus on climate science.
| Fact | Value |
|---|---|
| Full name | Greta Tintin Eleonora Ernman Thunberg |
| Born | January 3, 2003, Stockholm, Sweden (MyCIL) |
| Parents | Malena Ernman (opera singer), Svante Thunberg (actor) |
| Education | Attended school in Stockholm, currently studying |
| Activism start | August 2018 (YouTube – Greta Thunberg summary) |
| Instagram handle | @gretathunberg (17M followers) |
What has Greta Thunberg been diagnosed with?
Thunberg’s medical history is unusually public for a teenager, largely because she and her family have chosen to speak openly about it. Here’s what is known.
Diagnosis at age 11
- Thunberg was diagnosed with Asperger’s syndrome, obsessive-compulsive disorder (OCD), and selective mutism when she was 11 years old (PMC (National Institutes of Health)).
- Her mother, Malena Ernman, made the diagnosis public in May 2015 to help other families (according to Wikipedia).
Asperger’s syndrome and OCD
- Thunberg has described her Asperger’s as a “superpower” and said being different is a gift (YouTube – Greta Thunberg summary).
- In a 2024 peer-reviewed article, researchers noted that Thunberg has said many Fridays for Future participants are on the autistic spectrum and joined because they could not pretend nothing was happening (PMC (National Institutes of Health)).
Selective mutism
- The selective mutism diagnosis means Thunberg sometimes cannot speak in certain situations. She has said her mutism “only means I speak when I think it’s necessary” (Wikipedia).
Later self-identification as bipolar
- Reportedly, Thunberg has also publicly identified as bipolar, though this claim is based on less authoritative sources (Nednote (blog)). She has not detailed this diagnosis in major interviews.
Thunberg’s neurodivergence is often framed as a weakness by critics, yet she has turned it into a fuel for focus. The same traits that make social interaction difficult — hyperfocus, bluntness, relentless repetition — are exactly what the climate movement needed.
What is Greta Thunberg most famous for?
Her fame rests on a single, audacious act that snowballed into a worldwide movement.
School strike for climate
- On August 20, 2018, then-15-year-old Thunberg skipped school and sat outside the Swedish Parliament with a sign reading “Skolstrejk för klimatet” (Wikipedia – Fridays for Future).
- She continued striking every Friday, inspiring the global Fridays for Future movement that mobilized millions of students (Wikipedia).
Fridays for Future movement
- By 2019, coordinated strikes took place in over 150 countries (Wikipedia – Fridays for Future).
- Thunberg was named a Time Person of the Year in 2019 and was nominated for the Nobel Peace Prize every year between 2019 and 2023 (Wikipedia).
UN speech (“How dare you”)
- At the 2019 UN Climate Action Summit, Thunberg delivered a tearful, angry speech: “How dare you? You have stolen my dreams and my childhood” (Wikipedia).
- The speech went viral, making her the most recognized youth climate activist globally.
Global climate activism
- She has met with world leaders, testified before the US Congress, and sailed across the Atlantic to avoid flying (Wikipedia).
- Thunberg ended her school strikes in summer 2023 after finishing school, but continues to speak and campaign (Wikipedia – Fridays for Future).
The pattern: Thunberg’s school strikes transformed into a global movement, but after graduation, her activism has shifted from weekly protests to broader advocacy.
How does Greta Thunberg make a living?
Despite accusations that she profits from climate activism, her income is modest and largely donated to causes.
Book royalties and speaking fees
- Her book The Climate Book (2023) generates royalties, though she has said she does not take a salary from activism (Wikipedia).
- Speaking fees from invited events are typically donated to environmental organizations.
Prize money from awards
- She won the Right Livelihood Award in 2019 and Amnesty International’s Ambassador of Conscience Award that same year (MyCIL). Prize money has been donated to climate groups.
No income from activism
- Thunberg has repeatedly stated she is not paid for her activist work. Her parents — an opera singer and an actor — provide financial support (YouTube – Greta Thunberg analysis).
Financial support from family
- Her mother’s earnings from performances and recordings, along with her father’s acting income, have covered family expenses. Thunberg lives modestly.
The question of Thunberg’s finances is used by critics to undermine her message. But the documentary evidence shows she has donated the bulk of her prize money and does not draw a salary — a pattern that weakens the “profit-driven activist” narrative.
What did David Attenborough say about Greta Thunberg?
Naturalist Sir David Attenborough has been one of her most prominent adult supporters.
Attenborough’s praise for her activism
- Attenborough has called Thunberg “the one who has done more than anyone else to raise awareness of climate change” and expressed admiration for her passion (BBC News profile).
Their meeting in 2019
- The two met for a BBC interview in 2019, where Attenborough praised her determination and knowledge of climate science (Wikipedia).
Shared commitment to climate action
- Attenborough’s 2024 documentary series Secret World of Sound showcases his ongoing environmental advocacy, aligning with Thunberg’s mission (IMDb).
The catch: Despite their alliance, Attenborough’s measured tone contrasts with Thunberg’s confrontational style, yet both share the same goal.
What did Greta Thunberg do that was controversial?
Her blunt style and political stances have attracted intense criticism.
Criticism of world leaders
- Thunberg’s “How dare you” speech angered many politicians and commentators who felt she was disrespectful (Wikipedia).
- She has called out leaders by name, including Donald Trump and Jair Bolsonaro, on social media.
Pro-Palestinian stance
- In 2021, Thunberg expressed support for Palestine, sparking accusations of being one-sided. She replied that “the climate crisis and human rights are connected” (Wikipedia).
Accusations of being too radical
- Some critics argue she is manipulated by adults or that her “doomism” frightens people without offering solutions (Wikipedia).
- She has been arrested several times for environmental protests and fined by Swedish courts (Wikipedia).
Thunberg’s refusal to soften her message wins her a devoted base but alienates moderate audiences. For the climate movement, that trade-off has been deliberate: she prioritizes urgency over popularity.
Timeline of key events
- 2018: Started school strike outside Swedish Parliament (Wikipedia)
- 2019: UN Climate Action Summit speech; Time Person of the Year; Right Livelihood Award (Wikipedia – Fridays for Future)
- 2020: COVID-19 pandemic; virtual activism (Wikipedia)
- 2021: Pro-Palestine statements; controversy (Wikipedia)
- 2023: Published The Climate Book; ended school strikes (Wikipedia)
What this means: The timeline shows Thunberg’s rapid ascent and the controversies that accompanied her growth.
What’s clear and what’s not
Confirmed facts
- Diagnosed with Asperger’s, OCD, selective mutism at 11 (PMC (National Institutes of Health))
- Started school strike August 2018 (Wikipedia – Fridays for Future)
- David Attenborough praised her (BBC News profile)
- Arrested multiple times for protests (Wikipedia)
What’s unclear
- Exact net worth
- Marital status
- Whether she will run for office or start a formal organization
- Full details on her self-identified bipolar diagnosis
- Exact number of Instagram followers
Key quotes
“I have Asperger’s and that is a superpower.”
— Greta Thunberg, in numerous interviews (YouTube – Greta Thunberg summary)
“How dare you? You have stolen my dreams and my childhood.”
— Greta Thunberg, UN Climate Action Summit, 2019 (Wikipedia)
“She has done more than anyone else to raise awareness of climate change.”
— Sir David Attenborough (BBC News profile)
What this means going forward
Greta Thunberg has already achieved what most activists only dream of: shifting the global conversation on climate change. But her path has been fraught with controversy, and as she transitions from school striker to adult activist, the question is whether she can maintain her influence without the moral authority of a schoolchild. For the climate movement, the choice is clear: embrace her uncompromising voice, or risk losing the urgency she brought to the table. For context on other public figures navigating controversies, see our article on Elon Musk: Health, Wealth, Family, and Future Predictions. Similarly, other European public figures like Kaja Kallas have also faced controversies leading to role changes.
researchautism.org, en.wikipedia.org, nationalgeographic.com, nhm.ac.uk, panoramamag.it
Frequently asked questions
What is Greta Thunberg’s net worth?
Exact net worth is not publicly known. She does not take a salary from activism and has donated prize money to climate causes.
Is Greta Thunberg married?
No confirmed information about marriage is available.
What is Greta Thunberg’s age?
Born January 3, 2003, she is 21 (as of 2024).
Where was Greta Thunberg born?
Stockholm, Sweden.
What awards has Greta Thunberg won?
Right Livelihood Award (2019), Amnesty International Ambassador of Conscience Award (2019), Time Person of the Year (2019), and multiple Nobel Peace Prize nominations.
What is Greta Thunberg’s Instagram handle?
@gretathunberg, with 17 million followers.
Has Greta Thunberg been arrested?
Yes, she has been arrested several times during environmental protests and fined by Swedish courts.
What is the Greta Thunberg effect?
The term refers to the surge in youth climate activism and public awareness triggered by her school strike and subsequent global movement.
Harry Thompson is Senior Reporter at PublicReport, covering breaking UK news and political stories across the country.