It's the "floating city" but also the sinking city. In the past...

CNN Climate 1 year ago

It's the "floating city" but also the sinking city. In the past century, Venice has subsided by around 25 centimeters, or nearly 10 inches. Meanwhile, the average sea level in Venice has risen nearly a foot since 1900. It's a tortuous pairing that means one thing: Not just regular flooding, but an inexorable slump of this most beloved of cities into the watery depths of its famous lagoon. For visitors, its precarious status is part of the attraction of Venice — a need to visit now before it's too late, a symbol that humanity cannot win against the power of nature. For Venetians, the city's island location has for centuries provided safety against invasion, but also challenges. Tides have got ever higher and more frequent as the climate crisis intensifies. And the city sinks around 2 millimeters a year due to regular subsidence. But what if you could just… raise the city? It sounds like science fiction. In fact it's the idea of a highly respected engineer who thinks it could be the key to saving Venice. Read more at the link in @cnnclimate's bio. 📸: Marco Bertorello/AFP/Getty Images; Miguel Medina/AFP/Getty Images; Andrea Merola/EPA-EFE/Shutterstock; Federico Meneghetti/REDA/Universal Images Group/Getty Images; Marco Di Lauro/Getty Images; Uygar Ozel/Shutterstock

layersDaily Sustainability Digest

Published about 4 hours ago



A £400m UK government loan to the Tropical Forests Forever Facility tightens the link between embodied carbon and real forest outcomes. Bio‑based and renewable building materials will now be judged on credible, deforestation‑free supply chains as much as on glossy lifecycle assessment or whole life carbon assessment outputs, driving wider use of environmental product declarations (EPDs), green building materials and green building products. Expect stronger traceability, circular construction strategies and end‑of‑life reuse in construction when specifying low embodied carbon materials and low carbon construction materials to cut the carbon footprint of construction and support the circular economy in construction.

Updated damp and mould guidance from the Chartered Institute of Building and the Chartered Institute of Housing reframes indoor environmental quality as a health obligation, pressing social landlords towards whole‑house ventilation, insulation upgrades and continuous monitoring. The shift embeds sustainable building design and energy‑efficient buildings as compliance issues, with implications for life cycle cost, building lifecycle performance and net zero whole life carbon pathways recognised by BREEAM and BREEAM v7.

A new retrofit procurement guide uses public spending to expand capacity, create local jobs and tackle skills shortages by baking training and labour targets into contracts. This gives sustainable construction and decarbonising the built environment delivery teeth, promoting life cycle thinking in construction, resource efficiency in construction and eco‑design for buildings, alongside sustainable material specification and low carbon building upgrades that support carbon neutral construction.

Escalating climate risks—from European wildfires to transboundary smoke and cascading Himalayan floods—are accelerating environmental sustainability in construction and sustainable urban development. Design for resilience is becoming core to net zero carbon buildings and green construction, with fire‑hardening, smoke filtration, heat‑safe interiors and green infrastructure specified to reduce the environmental impact of construction, deliver carbon footprint reduction over whole life carbon and strengthen eco‑friendly construction and sustainable architecture.

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