Coral reefs around the world are experiencing a mass bleaching event as the...

CNN Climate 2 years ago

Coral reefs around the world are experiencing a mass bleaching event as the climate crisis drives record-breaking ocean heat, two scientific bodies recently announced — with some experts warning this could become the worst bleaching period in recorded history. More than 54% of the world’s coral reef areas have experienced bleaching in the past year, affecting at least 53 countries and territories including large swaths of the Atlantic, Pacific, and Indian Oceans, a joint statement from the National Oceanic and Atmospheric Administration and The International Coral Reef Initiative said. “It is likely that this event will surpass the previous peak of 56.1% soon,” Derek Manzello, the coordinator for NOAA’s Coral Reef Watch program, said in an email to CNN. “The percentage of reef areas experiencing bleaching-level heat stress has been increasing by roughly 1% per week.” This marks the world’s fourth global bleaching event, and the second in the past decade – with previous periods in 1998, 2010, and between 2014-2017. Tap the link in bio for more. 📸: Bex Wright/CNN

layersDaily Sustainability Digest

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The UK’s retrofit gap remains the defining issue for sustainable construction. The National Retrofit Hub’s call for a stronger national retrofit system exposes persistent weaknesses in standards, skills, finance and policy stability. Treating retrofit as national infrastructure would support whole life carbon reduction, improve building lifecycle performance and strengthen environmental sustainability in construction across the existing building stock.

Nesta’s finding that electricity bills are rising more slowly than gas could sharpen the business case for low carbon design. Heat pumps, electric vehicles and fabric-first upgrades become more attractive when assessed through life cycle cost rather than upfront capital alone. Developers, landlords and retrofit providers can position electrification as a route to energy-efficient buildings, lower exposure to fossil-fuel volatility and progress towards net zero carbon buildings.

Climate adaptation is now a core test of sustainable building design. Planting, shading, passive cooling, urban greening and green infrastructure are becoming essential responses to overheating risk, particularly for lower-income households. Eco-design for buildings must address summer resilience as well as winter efficiency, linking sustainable design with health, comfort and long-term carbon footprint reduction.

Major infrastructure remains the sector’s most difficult contradiction. Renewed uncertainty over Heathrow expansion raises questions about the carbon footprint of construction, embodied carbon in materials and the credibility of net zero whole life carbon policy. Large projects need robust whole life carbon assessment, lifecycle assessment and transparent sustainable material specification, supported by environmental product declarations (EPDs), low embodied carbon materials and circular economy in construction principles. Sustainable construction has the techniques; consistent governance is still missing.

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