Justin Parkin-Rae takes a break from pulling chunks of weeds from around one of...

CNN Climate 1 year ago

Justin Parkin-Rae takes a break from pulling chunks of weeds from around one of the many rivers that snake through Kaikōura, a quaint fishing town on the east coast of New Zealand's South Island, named Te Waipounamu in his native Māori language. Behind him, Tamati Wikiriwhi and Nikora Wati are chest deep in the water, laughing as they lift a massive tree branch over their heads. The three friends are clearing out the river, which has become stagnant and full of toxic algae blooms due to invasive weeds and broken branches. It's important work, says Parkin-Rae, because clean waterways allow native plants and wildlife to flourish. They are among a growing community of Māori who are working to counter the catastrophic effects of climate change, which is eroding the country's shores, destroying its biodiversity, fueling extreme weather and threatening to displace entire communities. It's an existential threat felt across the world, but it's more pronounced on island nations like Aotearoa, the indigenous word for New Zealand, and among native people like Māori, whose culture and livelihood are rooted in the environment. Read more at the link in our bio. 📸: Alaa Elassar/CNN; Tim Clayton/Corbis/Getty Images; Sanka Vidanagama/NurPhoto/Getty Images

layersDaily Sustainability Digest

Published about 11 hours ago



Bio‑based construction is entering a decisive implementation phase as new engineering standards drive measurable performance and credibility. The release of a structural manual for bamboo transforms renewable building materials from conceptual to certifiable, giving engineers a shared framework for specification, durability testing and fire safety that aligns with standards for steel and concrete. This move advances sustainable construction by supporting low carbon design and enabling embodied carbon measurement across permanent structures. Integrating bamboo into structural use contributes to whole life carbon assessment and lifecycle assessment processes that underpin sustainable building design and environmental sustainability in construction.

The White Rose Forest’s 25‑year strategy to plant 134 million trees across northern England represents a significant link between green infrastructure and construction supply chains. Managed afforestation aligned with local processing, design standards and resource efficiency in construction has potential to deliver low embodied carbon materials, support net zero carbon buildings and embed circular economy principles. Tree planting tied to sawmilling and design verification increases the availability of green building materials while strengthening the regional circular economy in construction.

These developments tighten the bio‑based supply chain from nature to building performance. Developers are urged to adopt sustainable material specification within procurement to reduce the carbon footprint of construction and achieve whole life carbon targets. Early collaboration with insurers and BREEAM assessors can accelerate certification and enable coherent life cycle cost evaluation. Aligning afforestation programmes with industrial capability, testing and environmental product declarations (EPDs) will solidify the foundation for carbon neutral construction and measurable decarbonising of the built environment.

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