There's a saying that in a big city you are never more than six feet away...

CNN Climate 9 months ago

There's a saying that in a big city you are never more than six feet away from a rat. It's an urban myth, but scientists are warning cities across the globe are becoming far rattier, and the boom is primarily driven by one factor: climate change. Jonathan Richardson, a biology professor at the University of Richmond, decided to research urban rat trends after seeing media reports of rats taking over cities. These tended to focus on single locations and "usually without a lot of hard data," he told CNN. He and his team decided to change that. They requested rat stats from the 200 biggest US cities by population, but found only 13 had the quality long-term data they needed. To give more geographical range, the researchers also included three international cities: Toronto, Tokyo and Amsterdam. The data collected spanned an average of 12 years and comprised rat sightings, trappings and inspection reports. It revealed "significant increasing trends" in rat numbers in 11 of the 16 cities, according to their study, published Friday in the journal Science Advances. The study linked rat increases to several factors, including high population densities and low amounts of urban vegetation, but the predominant influence was warmer average temperatures. Read more at the link in our bio. 📸: Nick Lachance/Toronto Star/Getty Images

layersDaily Sustainability Digest

Published about 1 hour ago



Global investment in sustainable construction is accelerating, with a near $2 trillion pipeline of clean industrial projects reshaping the environmental sustainability in construction. Decarbonising the built environment now centres on reducing embodied carbon and whole life carbon across cement and steel production. Institutional capital is driving innovation toward low carbon construction materials and renewable building materials, allowing low carbon design principles to progress from concept to large-scale implementation. Green construction methods are expanding through eco-friendly construction strategies that prioritise life cycle thinking in construction, resource efficiency in construction, and circular construction strategies designed to reduce the carbon footprint of construction.

Cities are positioning sustainable urban development as a core element of climate resilience planning. Global municipalities are seeking more than $105 billion in funding for green infrastructure and nature-based solutions that deliver measurable improvements in building lifecycle performance. These initiatives increasingly require whole life carbon assessment and lifecycle assessment frameworks to align with net zero carbon buildings targets. The uptake of environmental product declarations (EPDs), BREEAM and the forthcoming BREEAM V7 standards reflects a clear commitment to evidence-based sustainable building practices and eco-design for buildings that meet low-impact construction and circular economy in construction goals.

The skills shortage threatens this progress. The UK faces a deficit of at least 14,000 trade apprentices within the green construction sector, limiting capacity for sustainable building design and life cycle cost optimisation. This talent gap risks slowing the transition to net zero whole life carbon operations and undermines cost control on major projects. Expansion of training in sustainable material specification, carbon footprint reduction, and end-of-life reuse in construction is essential to secure both project delivery and compliance with evolving embodied carbon in materials benchmarks.

Global climate policy fragmentation is adding pressure. Divergent national commitments create uncertainty for carbon neutral construction investors while the EU’s focus on low embodied carbon materials and comprehensive lifecycle frameworks strengthens its position as a leader in sustainable architecture and circular economy policy. The convergence of technology, governance, and skill development defines the next decade for sustainable design. Those integrating whole life carbon principles and rigorous life cycle thinking into procurement and project management will define the future of energy-efficient buildings and ensure the long-term competitiveness of the green building products sector.

Show More

camera_altFeatured Instagram Posts:

Get your opinion heard:

Whole Life Carbon is a platform for the entire construction industry—both in the UK and internationally. We track the latest publications, debates, and events related to whole life guidance and sustainability. If you have any enquiries or opinions to share, please do get in touch.