All methane articles
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NewsMethane-eating bacteria in rivers won’t save us from climate change
A comparative study in Belgium and Africa on the microbial oxidation of methane in rivers reveals that this biological filter, which is more active in African rivers, remains insufficient to offset the rise in methane emissions expected because of global warming and nitrate pollution.
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NewsFood waste treatment can boost renewable energy, but a hidden brown byproduct may be holding it back
Researchers have identified a key chemical obstacle in turning food waste into renewable methane, offering a new semi-quantitative way to track melanoidins and showing that higher doses can severely damage the microbial system.
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NewsTracking melanoidins to improve food-waste biogas recovery
Higher pretreatment temperatures in food-waste biogas recovery can promote Maillard reactions, generating melanoidins. A study shows that melanoidins increase with hydrothermal temperature and inhibit methane production by disrupting methanogenic microbial communities.
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NewsMethane emissions maximised by global warming
A new study explains how increases in natural methane emissions will be maximised under future climate warming. It showed that while methane consuming microbes do work harder under warmer conditions, they cannot fully check the extra methane being produced with warming.
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NewsNew reactor design produces renewable methane from carbon dioxide
A new reactor design efficiently converts carbon dioxide and renewable electricity into methane while scaling the system up by roughly an order of magnitude. It demonstrated that microbial electrosynthesis systems can be expanded beyond laboratory-scale devices while maintaining high energy efficiency and methane production rates.
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NewsThawing Arctic soil awakens only half of soil microbes, new study reveals
A study shows that even after months of thawing, around half of the microorganisms in High Arctic soils remain dormant. This challenges the assumption that warming uniformly boosts microbial activity and carbon release from thawing permafrost.
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NewsHow bacteria ‘chat’ their way to carbon-neutral water treatment
Global climate goals demand that wastewater treatment plants transform their operations. A new review reveals that quorum sensing (QS), the chemical communication system bacteria use to coordinate behavior, could be the key.
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NewsTibet’s thawing lakes accelerate greenhouse gas release
Lakes on the Tibetan Plateau are undergoing a dramatic transformation; once stable carbon sinks, they are rapidly becoming significant sources of greenhouse gases due to climate warming.
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NewsSource or sink? Trees with heart rot disease emit more methane, upending forest carbon models
New research suggests that upland forests harboring trees with a common and incurable fungal disease known as heart rot could actually be emitting more methane than they take in, therefore releasing more greenhouse gases than previously thought.
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NewsMethane’s missing emissions: The underestimated impact of small sources
Although efforts are being made to reduce the contribution of big polluters to methane in Japan, new research suggests that smaller sources are vastly underestimated in the Osaka metropolitan area. The team found unaccounted emissions from numerous small sources, including restaurants, commercial facilities, and private residences.
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NewsWetlands do not need to be flooded to provide the greatest climate benefit
Contrary to expectations, wetlands do not need to be completely flooded to provide the greatest climate benefit. Instead, the water table should be below the soil surface and remain stable, according to a new study.
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NewsBiochar boosts hydrogen and methane yield in next-generation food-waste-to-energy systems
A research team has demonstrated that adding biochar to two-phase anaerobic digestion systems can significantly increase hydrogen and methane production from food waste, while maintaining system stability under high organic loading rates.
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NewsBiochar boosts clean energy output from food waste in novel two-stage digestion system
A new study from researchers at the University of Western Australia and Universitas Brawijaya has found that adding biochar to advanced food waste recycling systems can significantly increase the clean energy yields of hydrogen and methane. This breakthrough offers promising strategies for municipalities and industries aiming to turn food scraps ...
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NewsManure digesters on farms carry limited benefits and potential harms
Manure digesters, touted as eco-friendly solutions for managing agricultural waste and reducing greenhouse gases, have limited capacity to reduce livestock-related greenhouse gas emissions, and entail potential hazards that may outweigh their benefits.
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NewsHigher methane emissions from warmer lakes and reservoirs may exacerbate worst-case climate scenario
Emissions of the greenhouse gas methane from lakes and reservoirs risk doubling by the end of the century due to climate change according to a new study. This in turn could raise Earth’s temperature more than suggested by the UN climate panel IPCC’s current worst-case scenario.
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NewsDrones reveal unexpectedly high emissions from wastewater treatment plants
Greenhouse gas emissions from many wastewater treatment plants may be more than twice as large as previously thought. This is shown in a new study in which the researchers used drones with specially manufactured sensors to measure methane and nitrous oxide emissions.
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NewsWastewater plants produce twice as much greenhouse gases as officially estimated
Wastewater plants emit about twice as much greenhouse gas as previously believed, according to a new study. Collectively sewer plants produced 1.9 times the nitrous oxide gas estimated by the Environmental Protection Agency and 2.4 times the methane.
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FeaturesBreathing alien air: the search for biosignatures on exoplanets
Among the most promising indicators of biogenic elements are volatile organic compounds produced by life forms. The detection of specific metabolites such as dimethyl sulphide (DMS) and related compounds may hint at extraterrestrial biology.
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NewsMicrobes hold the key to combating climate disaster, say scientists
Global microbiology organisations including Applied Microbiology International (AMI) have called for urgent action to put microbes at the heart of climate change mitigation, in a high-level panel discussion chaired by AMI Chief Executive, Dr Lucy Harper.
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NewsNew study shows biochar’s electrical properties can influence rice field methane emissions
A team of scientists has discovered that the ability of biochar to conduct electricity can significantly affect methane emissions from rice paddies, one of the largest sources of agricultural greenhouse gases worldwide.