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.
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Sustainable construction is transitioning from incremental efficiency upgrades to resilient, place-led strategies. Water scarcity in the Mountain West is driving a fundamental redefinition of sustainable building design, where hydrology, topography, and municipal capacity shape early planning decisions. These integrated approaches reflect the broader shift toward environmental sustainability in construction and circular economy principles underpinning regional growth. Corporate investment in low carbon design is intensifying as major technology campuses adopt whole life carbon assessment frameworks that align procurement, operations, and embodied carbon targets with long-term resilience rather than short-term optics.
Across housing, net zero carbon buildings and eco-design for buildings are moving from policy goals to financial reality. Community-focused developments in US cities demonstrate that low embodied carbon materials, lifecycle assessment, and life cycle cost analysis can underpin viable models that balance affordability with environmental impact of construction. Measured performance is beginning to outweigh render-led marketing, with success defined by building lifecycle performance under water stress, climate risk, or grid instability.
Governance remains the pressure point. Fort Worth’s redevelopment strategy shows that sustainable urban development and green infrastructure must be designed to avoid displacement, reinforcing the importance of life cycle thinking in construction and circular construction strategies. India’s landslide recovery demonstrates the cost of neglecting ecological integrity, strengthening the case for carbon neutral construction built on sustainable material specification and renewable building materials.
The energy transition remains uneven, exposing gaps in resource efficiency in construction and access to low carbon construction materials. Developers leading in decarbonising the built environment are integrating whole life carbon metrics with BREEAM and BREEAM v7 requirements, linking embodied carbon in materials to environmental product declarations (EPDs) and transparent end-of-life reuse in construction. Those employing circular economy in construction and adopting low-impact construction solutions are establishing the benchmarks for sustainable building practices and net zero whole life carbon delivery.
Sustainability is now measured through durability, adaptability, and the ability to deliver low carbon building performance across full lifecycle impacts. The industry’s value lies not in green building products or certifications alone, but in whether each structure contributes measurable carbon footprint reduction and lasting resilience within a truly eco-friendly construction framework.
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