All Chemistry World articles in September 2025
View all stories from this issue.
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OpinionAsk probing questions to work effectively in diverse teams
Sometimes, what you really want may not be what you say you want
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PuzzleSeptember 2025 puzzles
Download the puzzles from the September 2025 print issue of Chemistry World
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OpinionWhat I learned from going back to university in my 30s
Advice for the young student (at heart)
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CareersTeaching the next generation of cosmetic scientists
Trailblazing course receives accreditation from the Royal Society of Chemistry
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OpinionThe clean beauty movement highlights wider challenges in balancing chemical risks and benefits
The ‘clean beauty’ movement exemplifies broader challenges in how we evaluate chemical safety, balancing risks against benefits while avoiding regrettable substitutions.
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OpinionThe conceptual challenge of consumer safety
Understanding causation can motivate product improvements
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FeatureConsumers question safety of parabens and PFAS in personal care products amid health concerns
Growing research into cosmetic ingredients has been raising safety concerns among consumers. Bárbara Pinho explores the future of safer chemistry amid the ‘clean beauty’ trend
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OpinionWhat happens next after the plastic treaty negotiations fail once again?
Bold action may now be needed to secure agreement on plastic pollution
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BusinessWill oral weight loss drugs challenge injectables?
Pills may offer convenience for manufacturers, but it’s not clear they will overtake existing drugs
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FeatureHow stable isotope analysis reveals what ancient humans and Neanderthals ate
Analytical chemistry can tell us what our ancestors ate thousands – or even millions – of years ago. Rachel Brazil gets her teeth into the evidence
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![Cyclo[48]carbon [4]catenane](https://d2cbg94ubxgsnp.cloudfront.net/Pictures/100x67/4/6/3/542463_indexady6054_articlecontent_v2_18june3_70174.jpg)
ResearchRing of pure carbon stabilised by its catenane connections
C48 carbon allotrope can be isolated in solution
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BusinessThe challenge of developing oral alternatives to peptide weight loss drugs
Companies are racing to develop alternatives to injectable diabetes and weight loss drugs
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OpinionQuantum deception attempts turning water into wine
The effect lasts only a few picoseconds but demonstrates a way to manipulate the optical properties of materials
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FeatureThe chemistry of fear
Recent advances in measurement techniques have shed light on the different roles of various biomolecules during frightening and stressful situations. Anna Demming looks at how it may lead to new therapeutic interventions for conditions like PTSD
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NewsUS government cancels mRNA vaccine research
Experts fear industrial and academic research may move abroad after infectious disease projects cancelled
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ResearchLow lithium levels linked to Alzheimer’s
Immune cells’ ability to degrade amyloid-beta peptides restored in mice treated with lithium salt
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ResearchNobelium becomes heaviest element with identified compounds
Complexes containing hydroxide, water and dinitrogen ligands detected as researchers probe chemistry on the edge of the actinide series
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BusinessDuPont and spin-offs settle with New Jersey over PFAS contamination
Proposed deal with the US state includes $875 million in damages, plus clean-up funds