As summer temperatures in Osaka, Japan, soar closer to 100 degrees Fahrenheit,...

CNN Climate 1 year ago

As summer temperatures in Osaka, Japan, soar closer to 100 degrees Fahrenheit, staff at Expo 2025 are beating the heat with utility vests that are powered by the sun. Developed by Toyota Group company Toyoda Gosei, in collaboration with solar cell startup Enecoat Technologies and textile manufacturer Seiren, the utility vests are fitted with ultra-thin, flexible solar panels that weigh less than four grams each — lighter than a single sheet of paper — and power neck fans to keep the wearer cool. These solar "films" are made of perovskites. The perovskite solar cells are lighter, cheaper to produce and can be tuned to absorb a broader range of light, including visible and near-infrared. They can even be charged "under shade, in rainy and cloudy weather," says Shinichiro Fuki, director of the Toyoda Gosei team behind the vest. The team is gathering data daily on how it responds to different climate conditions, such as solar radiation and temperature, as well as the performance of the mobile battery that it connects to, which is expected to fully charge in five to 10 hours. According to Fuki, the project is a "world-first initiative" to integrate perovskite solar cells into wearables. "We hope people who work in an environment where they cannot easily obtain power without solar power will use and wear it," he adds. Tap the link in our bio to read more. 📸: Dan Campisi/CNN

layersDaily Sustainability Digest

Published about 11 hours ago



Europe’s investment shortfall is now strategic risk. BloombergNEF estimates $1.3 trillion a year is required across the UK, Norway and the EU to reach net zero by 2050, demanding rapid decarbonising the built environment with disciplined whole life carbon management, robust whole life carbon assessment and lifecycle assessment of both operational and embodied carbon. Capital should target measures with clear life cycle cost benefits and stronger building lifecycle performance, combining circular economy and circular economy in construction with circular construction strategies such as resource efficiency in construction, end-of-life reuse in construction and the use of low embodied carbon materials, low carbon construction materials, green building materials and renewable building materials under a rigorous sustainable material specification. Supply chains should rely on environmental product declarations (epds) to verify claims. This is how sustainable construction and sustainable building design deliver environmental sustainability in construction and achieve net zero carbon targets.

Nepal’s floods, which removed more than a tenth of national generation capacity, expose the cost of underinvesting in resilience and over‑reliance on single systems in hazard‑prone terrain. Design and siting must plan for compound events, diversify critical assets and harden supply chains, embedding life cycle thinking in construction so the environmental impact of construction and the carbon footprint of construction fall while reliability and community‑centred recovery improve through eco‑friendly construction and low‑impact construction.

Technology is reframing options for colocated power. A federally approved plan to install a nuclear reactor a mile underground in Kansas signals potential for large sites to pair on‑site, low‑carbon generation with energy-efficient buildings, low carbon design, low carbon building, carbon neutral construction and net zero carbon buildings. If consented and scaled, such strategies can help deliver net zero whole life carbon against frameworks like BREEAM and BREEAM v7, provided procurement also tackles embodied carbon in materials and green building products through verified environmental product declarations (EPDs).

Public health is strengthening the case for nature‑based solutions as clinicians prescribe time outdoors, putting green infrastructure on par with other critical systems. Cities that integrate parks, trees and blue‑green corridors into sustainable urban development and eco‑design for buildings advance sustainable building practices, green construction, sustainable architecture and sustainable design while driving carbon footprint reduction. The priority is design that integrates renewable energy, green building materials and renewable building materials into high‑performance, net zero carbon places, aligning sustainability with what communities need from every building and every construction project.

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