This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Monday 12 February 2024
Stepping On the Gas From Waste Dumps?
Methane is a 'greenhouse gas' with 86 times the potency of carbon dioxide. Since 2007, global methane emissions have actually accelerated. They're currently thought to account for about a third of global heating. A satellite study has shown that huge methane leaks emanate from unmanaged landfill sites (https://www.theguardian.com/environment/2024/feb/12/revealed-the-1200-big-methane-leaks-from-waste-dumps-trashing-the-planet). Methane is produced in landfill sites, when organic material (food scraps; wood; card; paper and garden waste) decomposes in the absence of oxygen. In well-managed sites, this gas can be collected to be used as fuel, reducing energy costs. When burned, it's converted to carbon dioxide, a less potent 'greenhouse gas' that can be collected. In unmanaged sites, the methane just escapes into the atmosphere. The satellite data recorded that, since 2019, there have been more than 1000 massive methane emissions from landfill waste dumps. These were mainly from populous areas of Argentina; Bangladesh; India; Pakistan; Spain and Uzbekistan. These huge methane leaks would doom any climate targets. Stemming them, would be a fast way of reducing global heating. Providing support for reducing the need for landfill as well as technology to collect any generated methane would be savvy investments.
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