Books written by
The biologist who turned planting trees into a movement, and won the Nobel Peace Prize for it
Wangari Maathai noticed that Kenyan women were walking further every year to find firewood, as deforestation stripped the countryside bare. Her response was almost absurdly simple: pay women small amounts to plant trees. That idea became the Green Belt Movement, which has since planted more than 30 million trees across Kenya — and it got her beaten and jailed multiple times by an authoritarian government that saw tree-planting as a political threat, before making her the first African woman to win the Nobel Peace Prize, in 2004.
Below is her bibliography in order, with my honest take on each one, a quick-facts box, an insight from Maria Popova’s writing about her on The Marginalian, and her actual Nobel Peace Prize lecture on video. If ideas like hers interest you — one person, one simple idea, real-world impact — I’ve also written about Muhammad Yunus, the microfinance pioneer.
Sources: The Nobel Prize, Wikipedia, and the Green Belt Movement archive. Last updated July 2026.
Wangari Maathai (1940–2011) was a Kenyan biologist and activist who founded the Green Belt Movement in 1977, which has planted over 30 million trees across Kenya by paying rural women to grow and plant seedlings. In 2004 she became the first African woman to win the Nobel Peace Prize, awarded for connecting environmental sustainability to democracy and peace. Her best-known book is Unbowed: A Memoir (2006), covering her life from a rural Kenyan childhood through repeated arrests and beatings for opposing deforestation and authoritarian rule, to her Nobel win.
“It’s the little things citizens do. That’s what will make the difference.”
— Wangari Maathai
Quick facts
The Green Belt Movement: Sharing the Approach and the Experience
A practical account of how the Green Belt Movement actually works: how tree nurseries are set up in villages, how women are paid small amounts per surviving seedling, and how a program that started as an environmental fix became, almost by necessity, a vehicle for women’s economic independence and civic organizing.
This is the least well-known of her books and, for anyone who wants to understand the actual mechanics rather than the inspirational version of her story, the most useful. It reads like a field manual as much as a manifesto — exactly what you’d expect from a trained biologist rather than a career activist.
Her memoir
Unbowed: A Memoir
Maathai’s autobiography, from a childhood in colonial Kenya through her scientific education in the United States, the founding of the Green Belt Movement, repeated arrests and physical assaults by the Kenyan government during the Moi era, and her eventual election to Parliament, culminating in her 2004 Nobel Peace Prize.
Start here. It’s the rare activist memoir that doesn’t flatten the author into a saint — she’s candid about the personal costs of the fight, including a divorce her husband sought partly because she was, in his own reported words, “too strong-minded for a woman.” The chapters covering her arrests and beatings are genuinely hard to read, in a way that earns the eventual Nobel Prize rather than making it feel inevitable.
The Challenge for Africa
A broader argument about African development, corruption, and leadership, written after her Nobel win gave her a global platform. Maathai argues that Africa’s problems are not primarily about aid or resources but about a “crisis of culture and leadership” that Africans themselves must resolve.
More argumentative and less personal than Unbowed, and occasionally repetitive of ground she’s covered elsewhere — but her willingness to direct as much criticism at African leadership as at colonial history is notable, and was not a popular position with everyone at the time.
Replenishing the Earth: Spiritual Values for Healing Ourselves and the World
Maathai’s last book, published a year before her death, moving from policy and memoir into a more explicitly spiritual register — drawing on her Catholic upbringing, Kikuyu traditional beliefs about sacred trees, and her own experience to argue for a values-based relationship with the natural world.
A fitting final statement: less about the mechanics of activism and more about why she thought the work mattered at a spiritual level. Read it after Unbowed rather than instead of it — on its own it can read as abstract, but as a coda to her life story it lands with real weight, especially knowing it was her last book.
Featured on The Marginalian
Maria Popova has written about Maathai directly, and returns to her as a recurring symbol in several essays about trees and resistance:
Popova’s main piece on Maathai centers on an illustrated children’s biography of her life, and retells how Maathai, after studying in the U.S. during the civil rights era, returned to Kenya to find deforestation accelerating under the same extractive logic colonialism had left behind — which is what led her to plant her first trees in 1977.
Watch: Wangari Maathai’s Nobel Peace Prize story
Footage covering Maathai’s 2004 Nobel Peace Prize win and lecture in Oslo, where she connected tree-planting directly to democracy, human rights, and peace.
Frequently asked questions
Who was Wangari Maathai?
Wangari Maathai was a Kenyan biologist and environmental and political activist who founded the Green Belt Movement in 1977. In 2004 she became the first African woman to win the Nobel Peace Prize, for connecting environmental sustainability, democracy, and peace.
What is the Green Belt Movement?
An organization Maathai founded in Kenya in 1977 that pays rural women small amounts to grow and plant tree seedlings, combating deforestation while creating income and civic organizing opportunities for women. It has planted more than 30 million trees and later expanded to other African countries.
Why did Wangari Maathai win the Nobel Peace Prize?
She won the 2004 Nobel Peace Prize for her contribution to sustainable development, democracy, and peace, becoming the first African woman and the first laureate honored primarily for environmental work. The Nobel committee cited her holistic approach linking environmental protection to democracy and human rights.
Was Wangari Maathai ever arrested?
Yes, multiple times. During Kenya’s authoritarian Moi era, she was arrested and beaten by police on several occasions for opposing government-backed deforestation projects and for broader pro-democracy activism.
What is Wangari Maathai’s most famous book?
Unbowed: A Memoir (2006), her autobiography covering her childhood, education, the founding of the Green Belt Movement, her political persecution, and her Nobel Peace Prize win.
How did Wangari Maathai die?
She died on September 25, 2011, in Nairobi, Kenya, at age 71, following a battle with ovarian cancer.
More from the shelf
AuthorMahatma Gandhi
Reading listBest Memoirs and Biographies
Reading listBooks by Female Authors
Written by Lisanne Swart
Lisanne curates books for curious readers at lisannewart.com, publishing original reading lists, author deep-dives, and honest recommendations since 2021. Read more about Lisanne.
