Students For the Environment met with Michael Muli, ISK’s Transport Officer, to discuss how our community can improve our sustainability as we work towards our 2030 Carbon Neutral goal. Michael Muli and his team work hard everyday to keep our community safe, whether in Nairobi or on InterCultural trips across Kenya. Yet transportation is inevitably a large part of every organization's environmental impact. ISK’s 2020 carbon audit indicated we generated 139 tonnes of carbon for bus transport, accounting for 22% of our overall footprint.
SFE and the Carbon Neutral Alliance met with Mr. Callan last year to share key points and recommendations from the over 200 responses to our community Earth Day sustainability survey. These included that buses do not idle their engines while waiting for students to board: they do not need to warm up and research shows that idling wastes fuel and is bad for student and community health*. In fact, according to the US Environmental Agency Report in 2024, diesel exhaust is “carcinogenic to humans”, and children are particularly susceptible to lung damage. The buses now aim to follow a policy of not idling; Mr. Muli says students can help by being on time to board the buses. We are also now using smaller vans for small groups of students, which will significantly help our school’s carbon footprint as the smaller buses use less fuel.
Mr. Muli proudly announced that we are getting our first electric bus, the first school in Kenya to do so. Although electric buses have high initial costs, they save money on gas and repairs in the long run.
Walking or cycling to school is not an option for many students. Mr. Muli pointed out that carpooling and using the school bus system leads to less traffic and congestion, which is better for efficiency and the environment. Please consider using these modes of transport to help our community become more sustainable.
Helena Stott and Elia O’Hara for SFE
ISK’s Intercultural Program now includes three projects with our carbon offsetting partners
In 2023 ISK introduced the Tsavo Wildlife Works IC trip taking students to the Kasigau Corridor in partnership with Wildlife Works, a REDD+ carbon offsetting project. The trip introduces students to real-world conservation efforts that connect climate action with community development. Students worked alongside the NEMA Women’s Group, I Spy Safari app (programmed by ISK alumni and benefiting wildlife rangers (www.ispysafari.com) and climbed Mount Kasigau.
This year we launched the Coastal Conservation IC trip connecting with another of ISK’s carbon offsetting partners, LEAF - the Little Environmental Action Foundation, a small, community-based project making a big impact in Kilifi. ISK’s support has helped expand mangrove planting areas, improving both environmental resilience and local livelihoods. This region has been affected by mangrove deforestation due to farming and charcoal production, leading to erosion and a loss of critical marine habitats. By planting and restoring mangroves, students directly contributed to carbon capture and the restoration of essential ecosystems that support crabs, shrimp, fish, and empower the local fishing community.
Students toured Bio-Ken and Watamu Turtle Watch to learn about conservation. We explored mangrove ecosystems on a creek float and SUP adventure. We also conducted a beach clean before visiting Eco-World Upcycling and Recycling Centre and seeing how the ‘waste’ we collected is recycled into eco-bricks with our Plastiki Rafiki partners.
Follow this link to learn how the LEAF grassroots initiative has enriched lives in Kilifi and strengthened ISK’s commitment to sustainability and intercultural learning.
Here you’ll find info on the Wildlife Works Tsavo success story.
On April 17th, the International School of Kenya marked a major milestone in its ongoing sustainability journey by celebrating Earth Day 2025 with its largest event yet. Building on last year’s success—where the Middle School took the lead in hosting guest presenters and student-led environmental workshops—this year’s celebration was a full-campus affair. For the first time, both the Middle and High School participated in a day of action, awareness, and advocacy centered on protecting our planet.
Over 20 guest presenters and community partners joined forces with ISK service clubs and student leaders to deliver a wide range of hands-on activities, discussions, and field-based initiatives. In the morning, all High School students took part in workshops or attended expert-led sessions. The Middle School followed in the afternoon, with many High School students stepping up to share their knowledge by leading sessions for younger peers.
The sessions reflected the incredible diversity of environmental challenges and innovations being tackled both locally and globally. Some of the sessions the students engaged in included:
Building benches and injection molding bag tags from 100% recycled plastic
Making "sustainable soap" using natural ingredients
Planting a food forest on campus and Indigenous trees in Karura Forest
Cooking and coming up with recipes using plant-based ingredients
Learning about elephant conservation, sustainable stoves, and plant-based products
Revamping ISK’s recycling center and conducting a community clean-up along Kirawa Road
Making tree seedballs to support local reforestation efforts
A special highlight of the day was the fruit tree giveaway for ISK staff, symbolizing the school’s commitment to long-term environmental stewardship. Staff were invited to choose two trees from five carefully selected fruit species, all suited to various altitudes, soil types, and rainfall conditions across Kenya. With Earth Day falling just before the Easter weekend, many local staff brought their trees to their rural homes, further extending ISK’s green footprint across the country.
We extend heartfelt thanks to all the dedicated clubs, student leaders, teachers, and external partners who made this day successful. Their time, knowledge, and passion brought the spirit of Earth Day to life for the entire ISK community.
Special thanks to our 2025 Earth Day Presenters:
UNEP, Save the Elephants, Grounded, Grove & Meadow, Provisions, World Bike Relief, Biolite, Planta, Loop, Thrift Treasures, Forest Foods, Karura Forest, Plastiki Rafiki, Greenhouse Club, and many others who are leading the charge toward a more sustainable future.
Together, we celebrated our planet—and took meaningful steps to protect it.
Good morning everyone, It’s a real privilege to be back here at ISK — a place that shaped me in so many ways. I started here in 3rd grade and graduated in 2005. Even though it’s been nearly 20 years, I still carry with me the spirit of this school — curiosity, courage, and a global outlook.
We’re here today to mark Earth Day. But let’s be honest — this day can no longer just be about awareness. It has to be about urgency. And more than that, it has to be about responsibility. Because the world is in crisis — not just ecologically, but socially. The climate crisis isn’t only about melting glaciers or rising temperatures. It’s about people. It’s about children displaced by drought, families pushed from their land by floods, smallholder farmers struggling with declining harvests, and communities fractured by scarcity. Today, over 100 million people are displaced — many of them climate refugees. In the decades ahead, mass migration will only increase as parts of our planet become less habitable. The climate crisis is not just an environmental crisis. It’s a human crisis. And yet — there’s hope. There’s innovation. And most importantly — there’s you. Your generation has more tools, more access, and more opportunity than any before it — not just to slow down the damage, but to reverse it. To rebuild better. To redesign everything.
Let’s look at where we are.
We are living through the sixth mass extinction. Nearly a million species are at risk. Over 75% of the Earth’s land surface and two-thirds of marine environments are significantly altered by human activity. Climate change is here — not as a threat, but as a reality. We see it in floods, droughts, forest fires, rising seas, and failing crops. And below all of that is a quieter crisis: the loss of soil. Over one-third of the world’s soil is severely degraded. And since 95% of our food comes from it, this isn’t just an environmental issue — it’s a direct threat to our food, our health, and our future. And yet, your generation stands at a turning point.
This is the best time in history to dedicate your life to regeneration. Every field — science, tech, finance, education, art, agriculture — is now intersecting with climate. Sectors like clean energy, regenerative agriculture, green construction, and climate tech are growing faster than nearly any others in the world. And Kenya is at the center of it. Right here in Kenya, we are redefining what sustainability looks like on the African continent. Roam, formerly Opibus, is building electric buses and motorbikes for African roads — designed and manufactured in Nairobi. EcoPost, led by Lorna Rutto, recycles plastic waste into strong fencing posts — tackling deforestation and pollution at the same time. Gjenge Makers, founded by Nzambi Matee, turns plastic waste into durable, affordable bricks stronger than concrete. BrightGreen is producing cleaner charcoal alternatives using organic waste — saving trees while creating jobs. In Kakamega, Kenya’s first waste-to-energy plant is converting garbage into electricity. And the Lake Turkana Wind Power Project — the largest in Africa — now supplies almost 17% of the country’s electricity. We’re also seeing a rise in green buildings — like those designed by Urban Green Consultants — that use less water, energy, and materials without compromising beauty or function.
These are not distant dreams. They are happening now. Led by Kenyans. Built for our future. And as we innovate, we protect. Kenya is one of the most biodiverse countries on Earth — home to over 50 national parks and reserves, from the Maasai Mara’s great migration to the ancient cedar forests of Mount Kenya. Our marine parks, like Watamu and Kisite-Mpunguti, protect coral reefs, sea turtles, dolphins, and whales. We’re also global pioneers in community conservation. Over 160 community conservancies across the country are proving that when local people lead conservation, wildlife thrives, and so do communities. But all this beauty is under threat. Wildlife corridors are shrinking. Forests are being cleared. Water cycles are breaking. So we must ask: what if we could grow food and restore ecosystems at the same time?
That’s what led me to co-found ForestFoods.
We grow food through a system called syntropic agroforestry — a way of farming that mimics natural forests. We grow vegetables, fruits, timber, medicinal plants, and spices all together in regenerative, layered systems. We build soil instead of depleting it. We use no synthetic chemicals. We increase biodiversity with every harvest. But ForestFoods is more than just a farm. It’s a vision: A vision where syntropic systems are planted across the country — where farmers, landowners, and communities grow food and forests together. Where we build agroforestry buffer strips around wildlife areas, helping reduce human-wildlife conflict. Where young children are nourished by food rich in minerals, grown from living soils. Where rivers flow again, aquifers are replenished, and the small water cycle is restored. Where biodiversity flourishes, from fungi to elephants. It’s a big and ambitious dream. But one rooted in logic — and in abundance. Because abundance brings balance. When people have enough — enough food, enough income, enough security — there is no desperation. And where there’s no desperation, there’s less conflict. Peace grows from abundance. With restored ecosystems and thriving people, we can build a more stable, equitable society. This is the work we’re doing at ForestFoods. And it’s work that belongs to everyone.
So what does this mean for you?
It means your life doesn’t have to be about fitting into a broken system. It can be about reimagining it. You’re growing up in one of the most ecologically rich, culturally vibrant, and innovatively bold countries on Earth. You don’t have to wait to make an impact. You can start now — with your questions, your creativity, your voice. So this Earth Day, don’t just plant a tree. Plant a vision. One of abundance, regeneration, and justice. Because we’re not just inheriting the Earth — We are rebuilding it.
And that journey starts with you.
Thank you.