Deep below the surface of the ground in one of the driest parts of the country, there is a looming problem: The water is running out — but not the kind that fills lakes, streams and reservoirs.
The amount of groundwater that has been pumped out of the Colorado River Basin since 2003 is enough to fill Lake Mead, researchers report in a study published earlier this week. Most of that water was used to irrigate fields of alfalfa and vegetables grown in the desert Southwest.
No one knows exactly how much is left, but the study, published in the journal Geophysical Research Letters, shows an alarming rate of withdrawal of a vital water source for a region that could also see its supply of Colorado River water shrink.
"We're using it faster and faster," said Jay Famiglietti, an Arizona State University professor and the study's senior author.
In the past two decades, groundwater basins – or large, underground aquifers – lost more than twice the amount of water that was taken out of major surface reservoirs, Famiglietti's team found, like Mead and Lake Powell, which themselves have seen water levels crash.
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📷: RJ Sangosti/MediaNews Group/The Denver Post/Getty Images
The UK’s acceleration toward *sustainable construction* underscores a decisive shift from ambition to delivery. National Grid ESO’s reforms to the grid connection process remove zombie projects and prioritise actionable, low carbon design ready to unlock billions in clean energy infrastructure. This structural change supports *green infrastructure* essential to *decarbonising the built environment*, linking energy planning with *sustainable building practices* that address both whole life carbon and embodied carbon impacts through rigorous whole life carbon assessment.
Offshore wind’s expansion, now generating nearly one-fifth of Britain’s electricity, highlights how *environmental sustainability in construction* relies on scalable, *eco-friendly construction* solutions. The developing offshore supply chain demands *sustainable building design* that integrates *circular economy in construction* strategies and *resource efficiency in construction*, enabling the transition towards *net zero carbon buildings* and *net zero whole life carbon* performance.
While material innovation remains subdued, the rise of energy-efficiency retrofits reflects a shift towards life cycle cost optimisation and *building lifecycle performance* over short-term gain. Firms such as Mapei point to recovery driven by energy-efficient buildings and *low embodied carbon materials*, reinforcing the value of *eco-design for buildings* and *sustainable material specification* guided by *environmental product declarations (EPDs)*. These principles strengthen the circular economy ethos and advance *carbon footprint reduction* across every project stage, from design to *end-of-life reuse in construction*.
Africa’s emerging solar market signals global diversification of *green construction*, with the continent expected to become a testbed for *low carbon building* strategies suited to extreme climates. The transition invites adoption of *circular construction strategies*, *renewable building materials*, and *sustainable urban development* underpinned by *life cycle thinking in construction*.
The alignment of policy reform, financial investment, and technical capability confirms that *sustainable design* has become core to delivering *carbon neutral construction* and reducing the *carbon footprint of construction* worldwide. The era of incremental action is ending—the new metric of success is measurable whole life carbon performance and resilient, *green building materials* innovation delivering true *sustainability* in the built environment.
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