SLSCO, a Texas company based in Galveston, has a $95 million contract to construct a 1.3-mile border wall on Mount Cristo Rey and two other barriers near El Paso. Customs and Border Patrol waived environmental and historical preservation laws last June so the border wall could be built on the mountain.
Despite the objections of the local Catholic diocese, which owns most of the mountain, work began at the site in January. Monte Cristo Rey is where the land border between the U.S. and Mexico ends and the Rio Grande becomes the dividing line. This point for centuries, Paso Del Norte, has served as a crossroads for Indigenous peoples, Spanish colonizers and westward-bound settlers on early railroads.
“Electronics would have made more sense than destroying a whole mountain,” local business owner Robert Ardovino said on a recent afternoon. “But they’re doing what they’re doing.”
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📸 Getty Images, Gaby Velasquez / Puente News Collective
Sustainable construction is entering a phase of measurable transformation as governments, regulators and industry bodies align on data-driven accountability. The UK’s forthcoming digital waste-tracking platform embodies this shift toward environmental sustainability in construction, providing transparency across supply chains and supporting circular economy in construction principles. Mandatory reporting from 2026 will make every stage of material use part of a lifecycle assessment, exposing inefficiencies and encouraging low embodied carbon materials selection to reduce the carbon footprint of construction.
Under the Building Safety Act, safety data architectures are being redeployed for sustainability purposes. Tracking performance over the entire asset life is directing attention to whole life carbon and embodied carbon in materials, ensuring that sustainable building design integrates both safety and environmental impact. The focus on whole life carbon assessment and life cycle cost management reveals a growing commitment to resource efficiency in construction and low carbon design practices that enhance building lifecycle performance.
The appointment of a chief executive for the Greenhouse Gas Protocol signals global progress in standardising carbon accounting, reinforcing the need for net zero whole life carbon strategies and rigorous environmental product declarations (EPDs). The convergence of standards is pushing sustainable building practices to adopt measurable benchmarks for net zero carbon buildings and carbon neutral construction.
Within materials innovation, organisations such as the Alliance for Sustainable Building Products are embedding sustainable material specification and advancing renewable building materials. Their influence underpins the evolution of green construction from isolated initiatives to systemic change, built on eco-design for buildings and circular construction strategies. The emergence of green building materials designed for end-of-life reuse in construction reflects a sector-wide move toward low-impact construction and decarbonising the built environment.
As governments from the UK to Colombia link energy policies with construction practices, the definition of a low carbon building now extends beyond design performance to the provenance of energy sources. The integration of lifecycle assessment, life cycle thinking in construction and sustainable design principles is accelerating a transition toward a data-led, verifiable model of sustainable architecture that supports the circular economy and drives genuine carbon footprint reduction in the built environment.
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