All Chemistry World articles in September 2025 – Page 3
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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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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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![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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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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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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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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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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OpinionThe conceptual challenge of consumer safety
Understanding causation can motivate product improvements
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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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CareersTeaching the next generation of cosmetic scientists
Trailblazing course receives accreditation from the Royal Society of Chemistry
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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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PuzzleSeptember 2025 puzzles
Download the puzzles from the September 2025 print issue of Chemistry World
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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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OpinionLiver toxicity remains an unpredictable hurdle for medicinal chemists
The liver’s complex role in metabolising drugs makes it both a critical consideration and potential stumbling block
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OpinionKarl Mueller: ‘I realised I had matured when I started giving away my best ideas’
The director of Ames National Laboratory in the US discusses getting hooked on chemistry via parental inspiration and a benchtop NMR
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