Vietnam just turned agricultural waste into climate control — and it’s brilliant.
While many countries spend millions on air-conditioning classrooms, educators in Vietnam found a smarter solution right under their feet. Their secret weapon?
Coconut husks — the fibrous waste usually discarded after harvesting.
These husks are now being transformed into natural insulation panels that keep classrooms up to 6°C cooler without using a single unit of electricity.
The science is elegantly simple: the fibers trap air, reduce heat transfer, and improve ventilation — delivering passive cooling that’s affordable, scalable, and climate-friendly.
This innovation shows that effective climate solutions don’t always require complex technology. Sometimes, they come from rethinking waste as a resource.
Vietnam’s approach is a powerful reminder: sustainability works best when it’s local, low-cost, and rooted in nature.
#ClimateInnovation#PassiveCooling#SustainableEducation#CircularEconomy#VietnamInnovation#LowEnergySolutions#GreenDesign#GlobalCitizenship
All insulation looks equal
— until 4:00 PM.
That’s when the heat stored in conventional, high-carbon insulation starts to leak back indoors. The material's performance cracks under pressure, and you go from feeling comfortable to suffering in your own home.
It’s a cycle that makes no sense: we burn fossil fuels to create insulation that heats the planet, only for it to fail during the very heatwaves it helped create.
The data from our 35°C (95°F) field test shows the shocking difference:
The Feel Test
Polystyrene Walls: The interior hit a stuffy 29°C (82°F).
Straw Walls: The interior stayed at a cool 24°C (75°F).
The Heat Wave Test
Synthetics: Surrender their heat after just 6 hours.
Bio-Based: Absorb and hold heat for 12+ hours.
The heat that gets through is 5 times weaker.
The Carbon Test
Foam/Fiberglass: EMITS ~200 kg of CO₂ per cubic meter.
Straw/Wood Fibre: STORES >200 kg of CO₂ per cubic meter.
Stop investing in materials that are a liability to your comfort and the planet.
It's time to build with walls that actually work.
#PassiveHouse#ClimateAction#HealthyHomes
Most people are surprised when they learn about FIVE’s commitment to sustainability.
It’s an interesting paradox:
1️⃣ We encourage our guests to indulge in every way possible, and yet…
2️⃣ We invest heavily in the sustainability of our hotels, concepts, and services.
I understand that guests stay at five-star hotels with the mindset to indulge and relax, not necessarily to think about sustainability.
It’s why we believe in 'Sustainable Indulgence' – our ethos that allows us to meet our guests' expectations for luxury while also committing to long-term sustainable practices that include resource-saving technologies and nature-based materials at each FIVE destination.
As a result:
▶️ 100% of FIVE’s Dubai and Zurich hotels are LEED Platinum certified, with FIVE LUXE holding the highest score in the world for 5-star hotels (LEED v4) and FIVE Zurich being the first LEED Platinum hotel in Switzerland.
▶️ FIVE’s Dubai hotels reported a carbon footprint 5x lower than the average UAE Luxury Resort, while FIVE Zurich runs almost 3.5x lower than the average 5-star hotel in Switzerland (CHSB 2023).
▶️ FIVE’s Dubai hotels formed a historic I-REC agreement with DEWA, enabling 100% electricity procurement from the Maktoum Solar Park.
▶️ In 2023, the group scored the only ‘A’ ESG rating in the world, beating over 7,000 companies evaluated by International Shareholder Services (ISS).
▶️ The Pacha Group has secured a 100% green power contract to run through 2025.
…and more!
If all of this can be achieved in 7 short years, I think we’ve got a bright (green) future ahead of us.
Did you know FIVE Hotels and Resorts was a leader in sustainable hospitality?
#Sustainability#SustainableDevelopment#Success
Norway is exploring innovative methods to repurpose decommissioned offshore oil platforms into sustainable ventures.
One striking example is the concept of converting these old oil rigs into eco-hotels or marine research hubs that are powered by renewable energy, particularly wave energy or offshore wind.
This approach supports the circular economy, reducing the need for expensive and environmentally taxing decommissioning of these massive structures.
Instead of dismantling them, which is costly and energy-intensive, these rigs are being reimagined as floating resorts, contributing to both eco-tourism and clean energy awareness.
The idea aligns with Norway’s broader environmental goals, especially its commitment to reduce carbon emissions and promote renewable technologies.
Norway already has significant investments in offshore wind, wave energy, and ocean innovation, and turning oil rigs into hotels is an extension of this green vision.
These eco-hotels are designed with sustainability in mind—featuring solar panels, desalination systems, and waste recycling setups—while offering tourists a once-in-a-lifetime experience in the open sea. Guests may enjoy underwater views, marine activities, and immersive education on marine conservation.
While still in the early conceptual or pilot stages (with various architectural designs proposed by firms like H2 Offshore and associations with Oceanix and Shell), this idea is gaining traction not just in Norway, but globally—showcasing how industrial infrastructure can be reimagined for a greener future.
Strategic General Manager | Operations & Growth, Seasoned business leader with over 20 years of end-to-end P&L ownership and strategic leadership across Healthcare, FMCG, and Luxury Retail sectors.
The Maldives is Pioneering the Wave-Powered Underwater Hotel Concept
Imagine waking up to reef fish drifting past your glass-walled suite, knowing the lights and air are powered entirely by the constant push and pull of the ocean above. This is the ultimate vision of high-end travel meeting sustainability in the Maldives.
The nation is exploring a transformative concept: pairing luxury underwater accommodations with offshore wave energy devices.
Engineering Meets Ecology
Instead of relying on diesel or distant grids, submerged arms or buoys convert wave motion directly into electricity. This innovation is a test case for whether luxury travel can achieve a near-zero carbon footprint while being more tightly integrated with the marine environment.
• Less Footprint: Architects and marine scientists are working to ensure units avoid sensitive coral heads and seagrass meadows, preserving wildlife corridors.
• Living Foundations: Materials are being chosen to resist corrosion and even allow marine life to colonize their outer surfaces, effectively turning the structures into artificial reefs over time.
For the Maldives, which sits on the frontline of rising sea levels and tourism pressures, experiments like this are vital. They demonstrate a path forward for regenerative tourism, where every rolling wave not only offers a view but also sustains the stay.
The Confirmed Source of Innovation
This concept builds directly on real-world sustainability efforts in the region. The wave energy technology described is being actively developed and tested in the Maldives, notably through the Okinawa Institute of Science and Technology (OIST) and partners at sites like the Holiday Inn Resort Kandooma Maldives.
This project aims to convert surf waves along the shoreline into usable, continuous electricity, showing the viability of this clean power source for island resorts.
The future of luxury is clean, quiet, and ocean-powered. Do you think this model can be scaled globally to other island nations?
#Maldives#EcoTourism#WaveEnergy#SustainableTravel#OceanTech#Innovation#GreenEnergy#FutureofHospitality
In a groundbreaking step toward sustainable construction, architects in Iceland are turning one of nature’s most destructive forces into an eco-friendly solution. By transforming volcanic lava ash into durable building bricks, they are replacing harmful plastic-based insulation materials like foam—ushering in a cleaner, greener future for architecture.
Iceland sits atop a highly active volcanic zone, where eruptions regularly produce vast amounts of ash. Instead of letting this material go to waste, innovative designers have found a way to recycle it into strong, lightweight bricks that offer excellent insulation properties. These lava ash bricks are not only sustainable but also significantly reduce the environmental impact associated with traditional construction materials.
Unlike plastic foams, which are derived from fossil fuels and contribute to pollution, lava ash bricks are natural, abundant, and far less harmful to produce. They also help improve energy efficiency in buildings by maintaining indoor temperatures more effectively—reducing the need for excessive heating in Iceland’s cold climate.
This innovation reflects a powerful shift in how we think about resources. What was once seen as volcanic waste is now being reimagined as a valuable building material. It’s a perfect example of circular design—where nature and technology work together to minimize waste and maximize sustainability.
As the world searches for greener alternatives in construction, Iceland’s lava ash bricks stand as a symbol of creativity and resilience. They prove that even in the face of natural challenges, solutions can emerge that benefit both people and the planet.
#IcelandInnovation#SustainableFuture#EcoConstruction#GreenBuilding
This is Rammed Earth
Used all around the world — from sections of the Great Wall of China to projects such as the Eden Project in Cornwall — rammed earth is one of the oldest construction techniques still in use today.
While the basic principles are simple — compacting layers of earth into temporary formwork using hand or pneumatic rammers to form walls and floors — successful rammed earth construction relies on a clear understanding of soil selection, mix design, detailing, and the technique’s limitations in order to achieve robust and attractive results.
The sheet explores how moist, graded subsoil is compacted in layers to form dense, loadbearing walls, and how modern detailing addresses durability, moisture protection and energy performance.
A key principle is protection from abrasion and running water, both during and after construction, as prolonged exposure can quickly erode compacted earth.
Stabilised rammed earth, where cement or lime is added to the mix, is more widely used in Australia and the USA. Stabilisation improves strength and durability, but at the expense of increased embodied carbon.
While rammed earth has high thermal mass, helping to moderate internal temperature swings, and hygroscopic properties that can help passively regulate internal humidity, it has a low inherent insulation value and typically needs to be paired with additional insulation to meet contemporary standards.
When used carefully, rammed earth offers a compelling balance between material efficiency, longevity and environmental performance.
This post is intended as an introduction only. For further reading:
– Walker, Keable, Martin & Maniatidis, Rammed Earth: Design and Construction Guidelines
– NBS Technical Article: Rammed Earth Construction
– Earth Building UK & Ireland (EBUKI)
– Houben & Guillaud, Earth Construction: A Comprehensive Guide
– Minke, Building with Earth
– BRE / CRATerre guidance on earthen construction
#RammedEarth#EarthConstruction#LowCarbonDesign#SustainableArchitecture#MaterialThinking#ThisIsA
A new wave is emerging in hospitality: nature-based design.
Hotels don’t just have an energy problem, they have a design problem. The solution is not about inventing something new, but rediscovering what our ancestors already knew.
For thousands of years, buildings worked with nature instead of against it:
🌞 Following the sun to stay warm in winter
🌬️ Using natural ventilation to stay cool in summer
🌱 Building with local materials that breathe and last for centuries
💧 Harvesting rainwater and reusing it in daily life
🕯️ Maximizing daylight to reduce artificial light
🔇 Valuing silence, with thick walls and layouts that created calm
This is a topic I’m passionate about and follow closely. Visionary architects and sustainability thinkers are pushing the idea even further: not just sustainable buildings, but autonomous ones, self-sufficient ecosystems that generate energy, recycle water, grow food, and integrate with nature.
The implications for hotels are enormous. Imagine properties that don’t just minimize their footprint, but operate as living systems, producing resources instead of consuming them, while offering guests a healthier, more authentic experience.
While fully autonomous hotels are still rare, we’re already seeing properties take important steps: minimizing footprints, producing part of their energy, integrating green infrastructure.
Guest expectations are evolving. Hospitality that merely “reduces harm” is no longer enough, the next frontier is hospitality that regenerates.
Some solutions are simple and universal. Rainwater harvesting, for example, can dramatically reduce water use while connecting guests with natural cycles.
And there are pioneers pointing the way forward:
🌊 Eco-Floating Hotel (HAADS): a futuristic concept designed to rotate with ocean currents, generating energy, recycling water and integrating circular systems, showing how autonomy could extend offshore.
🌆 Parkroyal Collection Pickering (Singapore): an urban “hotel in a garden” with 15,000 m² of sky gardens, green walls, rainwater harvesting and bioclimatic design, proving that even dense cities can host buildings that function as living ecosystems.
❄️ Svart (Norway, Arctic Circle): designed to be completely off-grid and energy-positive, producing more energy than it consumes while operating as a circular ecosystem.
Guests are noticing. Sustainability and wellness are no longer “extras”, they are expectations. At Surf Office, we see MICE groups increasingly prioritize hotels that optimize energy and water use and communicate it authentically.
💡 The opportunity is clear: hotels that embrace nature-based and autonomous design don’t just save resources, they create more meaningful, restorative guest experiences.
👉 Do you think autonomous hotels will become mainstream in hospitality, or remain the exception rather than the rule?
🌍 Beyond market trends, should this be optional, or a responsibility if we want to preserve our planet?
I recently spotted a Novotel Hotels branded glass water bottle marked #NoMorePlasticHere. That’s when I decided to dig deeper and found out it’s not just a cool design move, it’s part of something bigger.
Here’s what caught my eye:
💠 Novotel Guwahati has eliminated single-use plastic bottles in guest rooms by switching to reusable glass bottles made on-site, a simple yet powerful way to cut waste.
💠Novotel Mumbai Juhu Beach went a step further with their own bottling plant, able to fill 2,000 reusable bottles a day, plus replacing plastic with dispensers and compostable packaging.
💠Novotel Hyderabad Convention Centre is brewing water from air. Their atmospheric water generator offsets nearly 900,000 liters of groundwater a year, and their solar-waste system cuts 34.6 tonnes of CO₂ annually, just at one property.
💠Novotel Mumbai International Airport clinched the Green Key certification, thanks to strict waste, water, and energy management: solar, rainwater harvesting, no single-use plastic, digital room keys, and more.
On a global stage, #Novotel is partnering with WWF to protect ocean health, focusing on plastic reduction, sustainable seafood, marine conservation, and ocean education.
Why this matters:
Hotels are energy and waste hot-spots. When a brand this big walks the sustainability walk, it ripples across the industry and gives consumers something to actually admire.
So next time you're handed a glass bottle at the hotel, know it’s not just refreshment. It’s progress.
Source: ETHospitalityWorldAccor#Sustainability#Hospitality#Novotel#EcoDesign#GreenHotels#PlasticFree#CircularEconomy