A smog-choked province in eastern Pakistan has issued a rare plea for...

CNN Climate 2 years ago

A smog-choked province in eastern Pakistan has issued a rare plea for cross-border collaboration with India, as major cities in both countries endure severe air pollution that risks the health of millions. Officials in Punjab, Pakistan's most populous province of 127 million people, have drafted a letter to the Indian government to open a dialogue on the issue, Punjabi Secretary for Environment and Climate Change Raja Jahangir Anwar said. "We need climate diplomacy, as a regional and global issue," Anwar told CNN, just days after Punjab's megacity of Lahore, roughly 15 miles from the Indian border, saw its highest-ever levels of air pollution. "We are suffering in Lahore in a way due to the eastern wind corridor coming from India," he said. "We are not blaming anyone, it's a natural phenomenon." India and Pakistan have for decades navigated fraught and at times hostile relations, but as the issue of toxic air worsens, the neighbors are being forced to confront their shared responsibility – and fate – when it comes to the climate. Read more at the link in our bio. 📷: Arif Ali/AFP/Getty Images; Sakib Ali/Hindustan Times/Getty Images; Parveen Kumar/Hindustan Times/Getty Images

layersDaily Sustainability Digest

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Sustainable construction is moving from exemplar projects to market-wide system design, with clean steel emerging as a critical test for whole life carbon policy. A new study suggests the global shift to low-carbon steel could be achieved without raising consumer costs through a revenue-neutral policy model, strengthening the case for low embodied carbon materials in mainstream procurement.

For contractors, developers and public clients, the issue is no longer whether green building materials can perform, but how governments can de-risk low carbon construction materials, reduce the carbon footprint of construction and support net zero whole life carbon targets without shielding high-emission incumbents.

The UK retrofit agenda is becoming central to environmental sustainability in construction. The National Retrofit Hub’s call for a stronger framework comes as electricity and gas prices begin to decouple, improving the life cycle cost case for heat pumps, energy-efficient buildings and electrified homes.

Retrofit policy now needs consistent standards, skilled delivery capacity and consumer protection, backed by whole life carbon assessment, lifecycle assessment and better evidence on building lifecycle performance. Public support for requiring data centres to share waste heat with nearby homes signals a shift in sustainable urban development, treating rejected heat as green infrastructure rather than waste.

Climate adaptation is also reshaping sustainable building practices. GRAHAM’s appointment to deliver the Oxford Flood Alleviation Scheme highlights rising investment in resilience, while reports of roads melting in eastern England expose the environmental impact of construction decisions based on historic weather assumptions.

The built environment is being asked to cut embodied carbon in materials while improving durability against heat, flooding and infrastructure stress. The strongest response will combine sustainable building design, low carbon design, circular economy in construction, sustainable material specification, environmental product declarations (EPDs) and end-of-life reuse in construction. BREEAM, BREEAM v7 and other performance frameworks are likely to play a growing role as clients demand net zero carbon buildings, resource efficiency in construction and credible carbon footprint reduction across the full asset lifecycle.

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