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What are ‘planetary boundaries’ and why should we care?

Envirotec Magazine

New Delhi, November 2021: A municipal truck uses anti-smog gun to spray water on the road for dust suppression (image credit: PradeepGaurs / Shutterstock.com). We’ve done it already in the 1990s, when international cooperation quickly phased out ozone-depleting chemicals and stopped the dangerous ozone hole from getting ever-bigger.

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The ‘environmental crime of the century’ solved

Grist

The gas, CFC-11, was banned in 2010 under the Montreal Protocol — the international treaty to eliminate substances that wreck the Earth’s protective ozone layer. Years of efforts to protect the ozone layer might be reversed if the emissions continued, experts warned.

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What’s the latest with the ozone layer?

Envirotec Magazine

On 16 September, the world marked the International Day for the Preservation of the Ozone Layer. The European Space Agency (ESA) takes a closer look at this year’s ozone hole. The ozone layer in the atmosphere protects Earth from potentially harmful ultraviolet radiation. Ozone depletion is greatest at the South Pole.

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US, China commit to phase down climate-warming HFCs from refrigerators and air conditioners – but what will replace them this time?

Renewable Energy World

CFCs were destroying the ozone layer high in the Earth’s atmosphere, which is essential for protecting life from the Sun’s harmful ultraviolet radiation. But when they break down, they create chlorine that reacts with the protective ozone, letting dangerous radiation through to the Earth’s surface. How HFCs keep rooms and food cool.

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UK substantially underestimates its methane emissions from oil and gas production – and many other countries probably do too

Envirotec Magazine

Due to its climate and indirect health impacts (methane is a precursor for ozone which is an air pollutant that damages human health and crops), methane mitigation has recently become a global policy priority.

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China’s new frontier for VOC regulations

GreenBiz

Tue, 03/23/2021 - 01:15. Volatile organic compounds (VOCs) combine with nitrogen oxide to create ozone, a key precursor to smog. When energy use surges in the autumn and winter seasons, particulate matter and ozone increase to dangerously high levels. China’s new frontier for VOC regulations. Shuying Xu.

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Air and noise quality study will help inform Oxford City’s future environmental policy approach

Envirotec Magazine

The new ‘OxAria’ study started on 1st July, extending an existing collaboration which has enabled five low-cost air pollution sensors to be installed at city centre locations, generating real-time information on key air pollutants, including nitrogen oxides (NO, NO2), carbon monoxide (CO), ozone (O3) and particulate matter (PM1, PM2.5,