A breath of fresh air 😮💨
For the past 17 years, @nasa’s Aura satellite has watched our air get cleaner.
Nitrogen dioxide (NO2) is released into the atmosphere from burning fossil fuels, such as coal power plants or gasoline and diesel vehicles. This air pollutant has been linked to health problems including asthma. NASA’s Aura satellite has been measuring NO2 for nearly two decades.
This animation shows the yearly average NO2 from 2005 to 2022. You can see the air get cleaner. The cleaner air is primarily due to environmental rules that have helped reduce air pollution from power plants and cars.
#NASA #EarthData #NitrogenDioxide #AirQuality #Earth #NASAEarth
Video Description: A data visualization of average nitrogen dioxide levels over the United States as measured from space from 2005 to 2022. At the start of the animation, dark purple spots are seen over major cities throughout the country indicating high levels of air pollution. Rural areas are shown in light blue indicating low nitrogen dioxide levels. The dark purple spots fade into orange and then yellow as you move away from large city centers, however most of the Northeast is some shade of yellow-purple. As time moves forward the dark purple spots slowly shrink and fade leaving the majority of the map light blue with only small concentrations of dark purple over New York and Los Angeles.
Sustainable construction is moving from ESG aspiration to financial discipline. More than 830 companies and investors now back TNFD nature-risk disclosure, including investors with $26tr under management and listed firms worth $10.5tr. For developers, designers and material suppliers, environmental sustainability in construction is becoming inseparable from balance-sheet risk, whole life carbon, embodied carbon and credible whole life carbon assessment.
Climate exposure is also redefining sustainable building design. Insurers are reported to be retreating from some climate-risk cover, making life cycle cost, building lifecycle performance and resilience central to investment decisions. Satellite evidence of uneven urban subsidence, including coastal Jakarta sinking by up to 7cm a year in some areas, underlines the need for sustainable design, low carbon design, robust foundations, drainage and green infrastructure from the earliest project stages. Southern England’s severe water stress and tougher regulatory checks on corporate water use reinforce the commercial case for energy-efficient buildings, water-conscious eco-design for buildings and sustainable urban development.
Materials transparency is becoming a decisive test for green construction. Think Timber’s new pricing and supply-chain data platform points to the practical data needed to scale renewable building materials, green building materials and low carbon construction materials beyond flagship schemes. Stronger visibility over timber supply, sustainable material specification and embodied carbon in materials supports lifecycle assessment, environmental product declarations (EPDs), resource efficiency in construction and more reliable procurement for net zero carbon buildings.
The defence of the EU emissions trading system by energy and business groups signals intensifying pressure on cement, steel and other carbon-heavy inputs. The carbon footprint of construction will be priced more directly, accelerating demand for low embodied carbon materials, carbon footprint reduction, carbon neutral construction and decarbonising the built environment. Firms pursuing net zero whole life carbon will need circular economy thinking, circular economy in construction, circular construction strategies and end-of-life reuse in construction rather than isolated product substitutions.
UK construction output fell 1% in the second quarter, sharpening the commercial test for sustainable building practices. The strongest firms will make low-impact construction, eco-friendly construction and net zero carbon delivery repeatable rather than bespoke. BREEAM, BREEAM v7 and similar frameworks will matter most where they support life cycle thinking in construction, measurable building performance and lower environmental impact of construction. Green building is no longer a marketing claim; it is risk management, insurability and long-term asset protection.
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