Water scarcity is a huge global issue. More than 2 billion people lack access to safe drinking water, a situation set to worsen due to climate change, which fuels longer and more severe drought. As reservoirs shrink, groundwater dries up and rainy seasons become more erratic, some believe one answer to this crisis lies in the reservoirs of moisture in our skies.
Engineers at the Massachusetts Institute of Technology created a water harvesting device that is a window-sized panel made with absorbent material called "hydrogel," which has been infused with salt, folded up like origami and enclosed in glass.
The material, which looks like black bubble wrap, absorbs water vapor directly from the air, swelling up as it does so, then shrinking again as the water evaporates. The water condenses on the glass and flows down a tube to emerge as fresh, drinkable water. No power is needed, just heat from the sun.
The device doesn't produce a huge amount of water from the bone-dry air — around two-thirds of a cup a day — but the ultimate aim is to supply a household with drinking water even in arid deserts, said Xuanhe Zhao, a mechanical engineering professor at MIT.
Read more at the link in our bio.
📸: MIT
The UK construction sector is undergoing a structural transformation as sustainability becomes integral to policy and practice. Government planning reforms embedding environmental sustainability in construction within the promise of 1.5 million new homes indicate that sustainable building design and eco‑design for buildings are no longer peripheral ambitions. By linking planning approval to detailed whole life carbon assessments and life cycle cost reviews, developers must now demonstrate measurable progress toward net zero whole life carbon housing delivery.
The shift toward circular economy in construction principles is tangible through mandatory Circular Economy Statements, which require proof of resource efficiency in construction and end‑of‑life reuse in construction. This marks a decisive move from voluntary reporting to quantifiable performance, reinforcing circular construction strategies that favour low carbon construction materials, renewable building materials and verified environmental product declarations (EPDs). Such accountability is reshaping how embodied carbon in materials and the total carbon footprint of construction are assessed across the supply chain.
Technical progress is matched by regulatory tightening. Enhanced enforcement by environmental authorities signals that compliance with carbon neutral construction standards and reduced environmental impact of construction is now a prerequisite for planning success. As breeam v7 and emerging lifecycle assessment frameworks evolve, decarbonising the built environment depends on integrating sustainable building practices with verifiable performance metrics.
Investment in human capital remains the defining constraint. The urgent demand for skilled labour in low‑carbon engineering and advanced manufacturing highlights the labour market’s pivotal role in achieving net zero carbon buildings and delivering scalable green construction. Training initiatives targeting welders, surveyors and engineers must underpin the expansion of low carbon building capacity and ensure that sustainable urban development can progress from aspiration to built reality.
The emerging consensus is that sustainable construction is defined by data‑driven outcomes—measured building lifecycle performance, accurate whole life carbon accounting and achievable carbon footprint reduction. The sector’s credibility hinges on whether policy, technology and people can sustain this momentum toward a resilient, low‑impact built environment.
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