Saving the world

10 Inspiring Environmentalists Who Have Changed the World

When we think about the world we live in today, it’s hard not to reflect on the incredible efforts of people who fought tirelessly for its preservation. 

These environmentalists – some famous, others quietly impactful – didn’t just talk about saving the planet. They acted on it, and in doing so, they inspired millions to join their cause.

Let’s take a deep dive into the lives of 10 notable environmentalists who made history, changed the way we see nature, and continue to inspire action even today.

1. Rachel Carson – The Mother of Environmentalism

Rachel Carson
Rachel Carson (Source: rachelcarson.org)

Imagine a world where pesticides ran unchecked, destroying ecosystems. That was the reality until Rachel Carson stepped in. A marine biologist and writer, Carson’s groundbreaking book Silent Spring (1962) exposed the dangers of chemical pesticides like DDT.

Her work sparked a movement that led to the modern environmental movement in the United States. Even today, she’s remembered as a well-known environmentalist who paved the way for organizations like the EPA (Environmental Protection Agency).

Her courage reminds us that one voice can create ripples of change.

Key Takeaway: Carson showed that knowledge and passion could overturn dangerous practices. She’s one of the most famous environmentalists of the 20th century.

2. Wangari Maathai – Africa’s Green Warrior

Wangari Maathai
Wangari Maathai (Source: Brittanica)

Wangari Maathai wasn’t just an environmental activist; she was a force of nature herself. The first African woman to win the Nobel Peace Prize, Maathai founded the Green Belt Movement in Kenya.

Her organization planted over 51 million trees, fighting deforestation and empowering women in rural communities. Wangari’s legacy lives on in every sapling planted to restore degraded lands.

Why She Matters: Maathai’s work exemplifies the connection between social justice and environmental health, making her one of the great environmentalists of our time.

3. Greta Thunberg – The Voice of a Generation

Greta Thurnberg
Greta Thurnberg (2023)

Who would’ve thought a teenager could shake the world? Greta Thunberg, a Swedish activist, began her journey with solo school strikes for climate change outside Sweden’s parliament. Today, she’s among the most famous environmentalists alive.

Her speeches at the UN and other global platforms call out world leaders for inaction. With her unrelenting passion, she has inspired millions of young environmentalists to take a stand.

Fun Fact: Greta was Time Magazine’s Person of the Year in 2019 – a testament to her incredible influence as a famous environmentalist today.

4. John Muir – The Father of National Parks

John Muir
John Muir (Source: Carlifornia Museum)

Known as one of the most well-known environmentalists of the 19th century, John Muir’s love for the wilderness led to the creation of national parks in the U.S.

His writings and advocacy were instrumental in establishing Yosemite and Sequoia National Parks. Muir also co-founded the Sierra Club, which continues to protect nature to this day.

Legacy: Without Muir’s efforts, the concept of national parks might never have taken off, depriving future generations of their natural beauty.

5. Jane Goodall – The Voice of Wildlife Conservation

Jane Goodall
Dame Jane Goodall (Source: janegoodall.org)

If you’ve ever seen a documentary about chimpanzees, chances are Jane Goodall was involved. As a primatologist and conservationist, Goodall spent decades studying chimpanzees in Tanzania, revolutionizing our understanding of these animals.

Through the Jane Goodall Institute, she works tirelessly to promote conservation and sustainability. Today, she’s one of the most notable environmentalists in wildlife protection.

In Her Words: “What you do makes a difference, and you have to decide what kind of difference you want to make.”


Want to save the planet like these heroes but have no clue where to start? Check out our amazing guide on becoming an environmentalist to put your best foot forward!


6. Chico Mendes – The Amazon’s Protector

Chico Mendes
Chico Mendes 

Chico Mendes, a Brazilian rubber tapper, rose to prominence as an environmental activist fighting deforestation in the Amazon rainforest.

Mendes helped organize workers to protect their lands and prevent illegal logging. Tragically, his fight cost him his life, but his legacy endures. Today, he’s remembered as a famous environmentalist who sacrificed everything for the Earth.


Impact: Chico’s work inspired modern environmental justice movements, highlighting the struggles of indigenous communities.


7. Theodore Roosevelt – The Conservation President

Theodore Roosevelt
Theodore Roosevelt (26th U.S. President)

Before becoming U.S. President, Theodore Roosevelt was already an avid naturalist. As president, he created five national parks, 150 national forests, and 18 national monuments.

Roosevelt’s policies preserved over 230 million acres of land. He’s a great environmentalist who saw the bigger picture: protecting natural resources for future generations.

Interesting Fact: Roosevelt’s love for nature led him to create the Antiquities Act, allowing presidents to designate national monuments.

8. Vandana Shiva – The Advocate for Sustainable Agriculture

Vandana Shiva
Vandana Shiva

An Indian scholar and environmental activist, Vandana Shiva has been a relentless advocate for sustainable agriculture and biodiversity.

She challenges the corporate dominance of agriculture, emphasizing the importance of organic farming and seed preservation. Shiva’s work has made her one of the most famous environmentalists in sustainable living.

Her Message: “Earth democracy is based on giving back to the Earth what we take.”

9. David Attenborough – The Voice of the Planet

Sir David Attenborough
Sir David Attenborough

If you’ve ever been mesmerized by nature documentaries, you have David Attenborough to thank. A broadcaster and natural historian, Attenborough’s voice has brought the wonders of nature into millions of homes.

His series, such as Planet Earth and Blue Planet, have raised awareness about environmental issues, making him a well-known environmentalist today.

Why He’s Loved: Attenborough’s storytelling inspires action and reminds us of the beauty we must protect.

10. Sylvia Earle – The Guardian of the Ocean

Dr. Sylvia Earle
Dr. Sylvia Earle

Sylvia Earle, an oceanographer and explorer, has spent her life advocating for marine conservation.

Nicknamed “Her Deepness,” Earle has logged over 7,000 hours underwater. Her mission to protect marine ecosystems makes her a notable environmentalist in ocean preservation.

Her Goal: Establish “Hope Spots” – protected areas in the ocean to safeguard marine biodiversity.

The Takeaway

These environmentalists – famous, dedicated, and passionate – remind us that protecting the Earth is everyone’s responsibility. 

From Rachel Carson to Greta Thunberg, their work proves that change is possible when we care deeply enough.

Who inspires you the most from this list of environmental activists? 


Also if you want to become an environmentalist like these icons, check out our previous article on becoming an environmentalist to start your journey.