The West Indian rock iguanas were once ubiquitous on the Grand Cayman Island in...

CNN Climate 6 months ago

The West Indian rock iguanas were once ubiquitous on the Grand Cayman Island in the Caribbean, however the arrival of humans, and the invasive predators that came with them, brought deadly threats to the species. Habitat loss, hunting and a wave of feral cats and dogs pushed the lizards, referred to as "blue dragons," to the brink of extinction. In the early 1990s, researchers estimated there were between 100 and 200 blue iguanas surviving in the wild. But within a decade, those numbers had plummeted, with fewer than 25 individuals remaining in 2002. Thanks to ongoing conservation efforts, the blue iguana is back from the brink of extinction. Through captive breeding and a habitat protection program, over 1,200 have now been released into the wild, primarily in protected areas. This led to the species being reclassified from "critically endangered" to "endangered" in 2012, according to IUCN's Red List of Threatened Species. Read more at the link in our bio. #CallToEarth 📸: Laura Butz/National Trust; David Rogers/Getty Images; Flavio Vallenari/E+/Getty Images; Laura Butz/National Trust; Frank Polich/Reuters; Scott Olson/Getty Images

layersDaily Sustainability Digest

Published about 3 hours ago



Sustainable construction is redefining its priorities as environmental sustainability in construction shifts from technology-driven solutions to place-based, resource-conscious design. Across climate-stressed regions, the focus is turning to whole life carbon assessment, lifecycle assessment and life cycle cost as essential tools to measure and control the carbon footprint of construction. Developments in the US Mountain West are embedding low carbon design principles, addressing drought and urban growth constraints through sustainable building design that integrates water efficiency, green infrastructure and renewable building materials into district-scale masterplans.

In India, reconstruction efforts in landslide-prone regions expose the financial and environmental risks of neglecting embodied carbon in materials and sustainable building practices. Resilient schemes now apply eco-design for buildings and life cycle thinking in construction to avoid repeating failures, reinforcing that whole life carbon and embodied carbon metrics must guide future housing strategies.

Urban housing demonstrates the growing viability of net zero carbon buildings and low carbon construction materials, supported by sustainable material specification and green building products that deliver measurable performance improvements. Investors are tying building lifecycle performance to life cycle cost benefits, transforming sustainable design into a mainstream financial metric rather than a niche initiative.

Corporate campuses and mixed-use retrofits are consolidating a retrofit-first logic. The drive to decarbonise existing stock is aligning with circular economy in construction principles, end-of-life reuse in construction and circular construction strategies that minimise demolition and embodied carbon losses. Achieving net zero whole life carbon and BREEAM V7 certification is becoming the benchmark for responsible modernisation, integrating resource efficiency in construction and environmental product declarations (EPDs) into procurement systems.

Uneven policy frameworks and material supply constraints are prompting adaptive low-impact construction strategies that incorporate circular economy thinking and carbon footprint reduction across borders. Designs must allow flexibility to meet differing lifecycle assessment standards while maintaining alignment with global goals for decarbonising the built environment.

Future-ready sustainability depends on district-level efficiency, hazard-aware land planning and community-led stewardship. Success belongs to those who demonstrate environmental sustainability at the level that truly counts—the whole place—delivering net zero carbon outcomes through sustainable construction that unites performance, resilience and economic viability.

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