Garbage piling up in landfills isn't just an eyesore, it's also a...

CNN Climate 2 years ago

Garbage piling up in landfills isn't just an eyesore, it's also a climate nightmare, belching out large amounts of planet-warming methane gas. In the United States, the problem could be much worse than previously thought, according to a new study measuring methane pollution at hundreds of landfills across the country. Scientists flew over more than 200 landfills across 18 states from 2018 to 2022, in what they say is the largest measurement-based survey of America's landfills. Their results revealed average methane emissions were much higher than those officially reported, according to the study published Thursday in the journal Science. Methane — an invisible, odorless gas with over 80 times more warming power than carbon dioxide in the near-term — is produced by various sources, the biggest of wich are oil and gas and agriculture. Landfills tend to be a less well-known methane source, but they also have a huge impact, estimated at around 20% of global human-caused methane emissions. Landfills produce methane when organic waste such as food scraps, paper and wood decompose without oxygen, creating the perfect environment for methane-producing bacteria. Read more at the link in our bio. 📷: Carbon Mapper

layersDaily Sustainability Digest

Published about 5 hours ago



Renewable energy supply remains at the centre of sustainable construction progress, driven by a sharper emphasis on whole life carbon reduction and embodied carbon transparency. The landmark Power Purchase Agreement between Ecotricity and major UK venues such as The O2 and Hammersmith Apollo introduces hourly-matched renewable electricity directly into construction-adjacent infrastructure. This approach demonstrates how low carbon design and sustainable building practices are extending beyond individual projects to influence energy management across the built environment, creating a measurable impact on the carbon footprint of construction.

Innovation in low carbon building technology has accelerated through electric vehicle integration within heavy industry. Munro, the Glasgow-based manufacturer of electric 4x4 vehicles, has secured £2 million to expand production for mining, defence and construction sectors. The company’s portfolio aligns with net zero carbon buildings objectives and supports the decarbonising of the built environment, enabling contractors to meet life cycle cost targets through improved efficiency and reduced fuel dependency. Such advancements signal how sustainable design is being applied to both the machinery and materials that underpin green construction.

In materials science, the substitution of traditional carbon black with char—an upcycled byproduct of chemical recycling—marks a step forward in circular economy in construction principles. This innovation reflects a growing reliance on low embodied carbon materials and supports eco-friendly construction through reduced dependency on fossil-based additives. The move embodies whole life carbon assessment methodologies where each material’s energy input and reusability are evaluated to enhance building lifecycle performance, ensuring resource efficiency in construction extends across entire supply chains.

Skills and regulatory frameworks are evolving to match these innovations. The Institute of Sustainability and Environmental Professionals has launched the UK’s first accredited carbon accounting curriculum, designed to support ESG practitioners in conducting lifecycle assessments and environmental product declarations (EPDs). By integrating life cycle thinking in construction education, the programme strengthens understanding of embodied carbon in materials and fosters sustainable material specification that ensures transparency within sustainable building design. It also aligns with standards such as BREEAM and BREEAM v7, essential benchmarks for environmental sustainability in construction.

Policy continues to reinforce technical change. The EU’s simplification of its Carbon Border Adjustment Mechanism deepens alignment between trade and climate performance, addressing the environmental impact of construction imports while reinforcing circular economy goals. The initiative strengthens Europe’s drive toward carbon neutral construction and reinforces the importance of end-of-life reuse in construction. Together, these shifts suggest a sector embedding whole life thinking at scale, where green building materials, renewable building resources and eco-design for buildings converge to deliver net zero whole life carbon outcomes that redefine sustainable urban development.

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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.