Resources & Insights

Climate projections are no longer abstract scenarios. A +2°C world  is fast becoming the baseline future cities must prepare for. By 2050, urban environments will face higher average temperatures, more intense heatwaves, heavier rainfall events, and longer dry periods in between. In this reality, rooftops cannot remain passive surfaces.They must become active climate systems . What a +2°C World Means for Cities Climate science points to several converging pressures: Increased

Cities are often described as collections of buildings, roads, and utilities. In reality, they function much more like complex ecosystems , constantly exchanging heat, water, and air with the atmosphere. In this system, rooftops are not decorative elements.They are one of the largest and most influential climate interfaces a city has . Cities Operate as Integrated Climate Systems Every city regulates: Heat absorption and release Water movement and storage Air circulation and

When we think about the water cycle, most of us picture clouds, rain, rivers, and oceans. What often disappears from the story is evaporation  — the invisible process that connects land back to the sky and keeps climate systems in balance. In cities, this missing link has become a critical problem. The Water Cycle Is More Than Rainfall In natural ecosystems, the water cycle is continuous: Rain falls on vegetation and soil Water is absorbed and temporarily stored Evaporation a

Cities today are no longer facing isolated climate events. They are experiencing rapid swings between heatwaves, heavy rainfall, drought, and cold snaps  — often within the same season. Buildings designed for a stable past climate are struggling to keep pace. Static architecture can no longer cope with dynamic weather. Adaptability is now a core requirement of resilient design. Climate Extremes Are Accelerating Recent years have shown a clear pattern: Heatwaves are becoming m

Plastic waste is one of the defining environmental challenges of our time. Every year, millions of tonnes of plastic enter landfills, waterways, and oceans — fragments of a material designed for durability, yet rarely designed for regeneration. But plastic does not have to remain a problem.When reimagined through circular design, it can become part of the climate solution. WaterRoofs is built on this shift in thinking: turning plastic waste into evaporative infrastructure tha

When cities talk about water security, the conversation usually focuses on reservoirs, pipelines, desalination, or wastewater reuse. Evaporation is rarely mentioned. Yet evaporation is one of the most critical components of a stable water cycle  — and one that cities have systematically erased. Urban water scarcity is not only about how much rain falls. It is also about what happens to that rain once it reaches the city . The Missing Link in Urban Water Thinking In natural la

For decades, buildings were designed around a simple promise: shelter. Protection from rain, wind, heat, and cold. But climate science has moved far beyond that baseline — and architecture must follow. After 2025, neutral buildings are no longer neutral . Every roof, façade, and surface now actively shapes the climate around it. Climate Science Has Shifted the Rules Recent climate research makes one thing clear: cities are no longer just victims of climate change — they are a

Winter is often associated with cold temperatures, but one of its most damaging effects in cities is far less visible: dry air . As temperatures drop, humidity levels fall sharply — and in dense urban environments, this dryness is amplified by the way buildings are designed. Low winter humidity is usually framed as a comfort issue. Dry skin, irritated airways, static electricity. But in reality, humidity loss is a climate and public-health problem , tightly linked to how citi

As 2026 begins, cities around the world are facing a shared reality: rising temperatures, disrupted rainfall patterns, and air that is increasingly dry and unstable. While climate strategies often focus on energy, transport, or emissions, one of the most overlooked contributors to urban climate imbalance sits quietly above our heads. For decades, rooftops have been designed to do one thing only: push water away as fast as possible. Rain hits the roof, flows into drains, disap

2025: The year rooftops evolved from passive surfaces to climate-active systems As 2025 comes to a close, one thing is clear: the role of rooftops in climate resilience has fundamentally changed. What was once ignored — the flat, unused surface above every building — is now recognized as one of the most powerful tools  for urban climate adaptation. This year marked major scientific advances, policy momentum, global recognition, and real-world implementation for WaterRoofs and

This season, let’s imagine buildings that give back to the planet The holiday season invites us to reflect — not only on what we receive, but on what we give. In a warming world marked by extreme weather, rising temperatures, and ecological pressures, our built environment rarely feels like a source of generosity. Buildings consume: energy, materials, water, and land. But what if architecture could return something instead? What if rooftops — one of the largest unused surface

How evaporative roofs support cities through winter dryness and seasonal climate shifts December 21 marks the Winter Solstice  in the Northern Hemisphere — the longest night  and the shortest day  of the year. Temperatures drop sharply. Air becomes thin and dry. Urban microclimates shift almost instantly. While much of the conversation around rooftops focuses on summer heat, winter also exposes a critical challenge: 👉 Cities lose humidity at night faster than natural systems

Why atmospheric moisture is the hidden backbone of climate stability — and how rooftops can help restore it. When we talk about climate change, we often mention temperature, CO₂, or extreme weather. But one of the most powerful — and overlooked — drivers of climate stability is humidity . Humidity is what allows forests to thrive, clouds to form, rainfall to stabilize, and microclimates to stay cool. It is the connective tissue of the water cycle. When humidity collapses, the

A global validation of evaporative roofing as a climate, circular, and urban innovation The Solar Impulse Foundation , founded by explorer Bertrand Piccard, is one of the world’s leading platforms for vetting and endorsing sustainable technologies that are both profitable and climate-positive . After a rigorous evaluation process, WaterRoofs has been officially recognized as a Solar Impulse Efficient Solution  — placing it among a global portfolio of high-impact innovations c

Why evaporative roofing belongs at the center of climate negotiations COP30 opens in Belém, Brazil , at the edge of the Amazon Rainforest  — one of the largest natural evapotranspiration systems on the planet. The Amazon alone releases 20 billion tonnes of water vapor  into the atmosphere every day , driving regional rainfall, regulating humidity, and stabilizing climate patterns across South America. Bringing the climate summit to this location is symbolic: 🌿 The world is f

What extreme storms teach cities about climate-resilient roofing The Philippines is one of the most typhoon-exposed nations on Earth. Every year, it faces 20+ tropical storms , including some of the strongest ever recorded. Names like Haiyan (Yolanda), Rai (Odette), Koppu (Lando)  and Goni (Rolly)  are reminders of how violent the atmosphere can become. And as the climate warms, typhoons grow: stronger wetter more unpredictable faster-intensifying These storms reveal a truth

Why understanding evaporation is essential for climate-ready urban design Most people understand rain. Far fewer understand evaporation  — yet it is the quiet force that powers the entire water cycle, cools landscapes, shapes rainfall patterns, and stabilizes local climates. Without it, ecosystems break down. Cities overheat. Forests become carbon sources. Rainfall becomes irregular and unpredictable. And this is exactly what has happened across urban areas worldwide. We have

What extreme environments teach us about resilient architecture Antarctica is one of the harshest places on Earth — a continent of ice, wind, and extremes. Yet every year, scientists, engineers, and climate researchers gather data there that helps us understand the future of our planet. Today, on Antarctica Day , we reflect on a fundamental truth: If we want our cities to survive a changing climate, buildings must be designed not just to shelter — but to adapt. Extreme enviro

On World Philosophy Day (November 27) , we are reminded to pause and ask fundamental questions about our place in the world. Philosophy isn’t just abstract — it shapes how we live, design, and build. And few areas show this more clearly than architecture . For centuries, architecture was defined as a barrier . Walls, windows, and rooftops were designed to separate humans from the elements — to block rain, shield from heat, and insulate against cold. Buildings stood as a defen

As winter approaches, many cities across Europe and beyond face a hidden seasonal health challenge : dry air. Indoor heating systems, sealed windows, and lack of evaporation all contribute to low humidity levels — leaving people vulnerable to respiratory problems, fatigue, and discomfort. While we often think of rooftops only in terms of shelter or energy efficiency, they can play a role in health and wellbeing  too. By restoring evaporation outdoors, WaterRoofs  helps balanc