Environmental science – Page 19
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NewsEstimates of mercury used in gold mining are so bad it’s hard to know if its use is falling
New research into the amount of mercury used to extract gold from slurry shows the national estimates are rarely any good
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ResearchUnexplained increases in five atmospheric CFCs raise concerns
Emissions increased 2.6-fold between 2010 and 2020
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FeatureThe complex chemistry of making paper
Renewable, recyclable and biodegradable, paper is the ultimate sustainable material. Victoria Atkinson looks at the clever chemistry that turns trees into sheets
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ResearchRNA building block uracil recovered from near-Earth asteroid Ryugu
Japanese mission returns pristine sample to bolster idea that prebiotic chemicals could have been delivered by meteorites
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BusinessNew Jersey sues Dow Chemical and others over 1,4-dioxane pollution
US State wants companies to be held accountable for cleaning up widespread contamination
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ResearchHarvesting water from the air with organic crystals
Discovery could lead to novel technologies for fighting water scarcity
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OpinionNuclear wasted
Atomic energy has the potential to reduce our carbon footprint, but the problem of waste is devilishly complex
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NewsUS finally set for nationwide regulation of PFAS in drinking water
EPA proposes standards for six PFAS compounds, and four will have limits based on cumulative effects
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FeatureThe long future of nuclear waste
Although enthusiasm for atomic energy has waxed and waned over the decades, Bárbara Pinho finds the question of waste has yet to be solved
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ResearchElectrochemistry offers new way to tackle rising carbon dioxide – extract it from seawater
New method has advantages over existing direct air capture systems
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Research‘Incredibly important advance’ reveals how wildfires could slow ozone layer recovery
Chlorine chemistry discovery shows how wildfire aerosols can reduce ozone in southern hemisphere by up to 5%
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BusinessUS government sues chemical firm over chloroprene emissions
Denka disputes claims of ‘unacceptably high’ releases from neoprene manufacturing facility
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NewsRecord-high carbon dioxide emissions from boreal fires
Boreal fires usually produce about 10% of global carbon dioxide emissions from wildfires worldwide, but the figure peaked at one quarter in 2021
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OpinionAnalysing the Winchcombe meteor fireball
The story behind the first spectrum of a meteor which became a recovered meteorite in the UK
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WebinarUranus: exploring the ice-cold chemistry of the ‘frozen frontier’
Find out why scientists are planning a new space mission to explore the planetary ice giant Uranus
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ResearchLoofah-structured hydrogel could help meet global clean water demands
Hydrogel water purification technology goes from a curiosity to a contender through a change in its structure
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ResearchMetal–carbon catalysts made from plants can break down plastics
Soil remediation study sees researchers develop method for converting low-density polyethylene into liquid hydrocarbons
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ResearchZircon study prompts redox state rethink surrounding hydrothermal pools thought to harbour life’s first molecules
Research combining experiments with modelling suggests hydrothermal fluid was 30% as saline as sea water today and more oxidised than the surrounding mantle