Environmental science – Page 9
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OpinionLetters: May 2023
Readers clarify the activity of the panel examining the crustacean mortality event
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NewsEPA proposes ban on most uses of dichloromethane
New rules would prohibit all consumer uses and most industrial uses of the chemical, and to regulate its use in the lab
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FeatureThe lithium rush
Move over, gold; lithium is now the metal in global demand. Kit Chapman untangles the global politics around the sought-after resource
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ResearchBenin bronzes are made of German brass
Discovery casts new light on the west African artworks, which Nigeria has asked colonial countries to return
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NewsExplainer: what is green chemistry and why does it matter?
25 years after the field’s 12 principles were first laid down, green chemistry has moved into the mainstream
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News‘Will we have the will to invest, the will to change?’: green chemistry 25 years on
Father of green chemistry says we’ve shown we can change, but can we transform the chemical sciences?
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NewsMicroplastic pollution purged from contaminated water using ultrasound
Prototype device concentrates plastic particles in flowing water with sound waves, removing over 70% of small plastic particles and 82% of larger ones
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ResearchMoon still holds surprises as vast amounts of water found in glass beads in lunar soil
Lunar water formed by the solar wind could one day aid exploration of the moon
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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%