Clay weekly context brief for the Chemistry category (ISO week 2026-W39). Clay tracks publications from the Chemistry feed list. Below are recent items from this category, each with its source and a short description of what the publication covers when one is available in the source feed. Recent publications: 1. Policy Watch: Fifth Circuit rejects EPAs methylene chloride ban Source: Chemical & Engineering News Link: https://cen.acs.org/policy/methylene-chloride-clinical-drug-trial-nsf-grant/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen A weekly roundup of policy news in the chemical arena and beyond 2. C&EN weekly chemistry news quiz, Sept. 18 Source: Chemical & Engineering News Link: https://cen.acs.org/content/cen/articles/104/web/2026/09/cen-weekly-chemistry-news-quiz-september-18.html?sc=230901_cenrssfeed_eng_latestnewsrss_cen Test your knowledge of our stories on skeletal editing, genome expansion, and more 3. Convincing industrial chemists to embrace AI in the lab Source: Chemical & Engineering News Link: https://cen.acs.org/business/research-industrial-chemists-embrace-ai/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen At the CIEX chemical innovation conference, artificial intelligence was unavoidable 4. Yara opens Europes largest carbon capture facility Source: Chemical & Engineering News Link: https://cen.acs.org/environment/greenhouse-gases/yara-opens-largest-carbon-capture-facility-europe/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Project to capture CO 2 from ammonia production could pave the way for more CCS investment in the region 5. Crossword: Assembly required! Source: Chemical & Engineering News Link: https://cen.acs.org/synthesis/crossword-assembly-required/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Enjoy this creation contrived by our cunning constructors 6. Metabolomics has a data problem. Could this competition fix it? Source: Chemical & Engineering News Link: https://cen.acs.org/analytical-chemistry/mass-spectrometry/competition-identify-small-molecules-capture/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen With new datasets, community seeks AlphaFold moment for small molecules 7. Polarity switch enables easier alkylation Source: Chemical & Engineering News Link: https://cen.acs.org/synthesis/catalysis/polarity-switch-enables-easier-alkylation/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Sequential decarboxylation lets chemists attach electron-rich groups to carbon-carbon double bonds 8. New Middle East disruption threatens Asias chemical makers Source: Chemical & Engineering News Link: https://cen.acs.org/business/economy/new-middle-east-disruption-threatens-chemical-makers/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Widening conflict is blocking supply routes charted to avoid the Strait of Hormuz 9. Poll: Who will win the Nobel Prize in Chemistry in 2026? Source: Chemical & Engineering News Link: https://cen.acs.org/people/nobel-prize/poll-2026-nobel-prize-chemistry/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Make your prediction for the 2026 Nobel Prize in Chemistry, and tell us why your pick deserves a call from Stockholm this year. 10. Why the Reflecting Pool coating peeled and blistered Source: Chemical & Engineering News Link: https://cen.acs.org/materials/coatings/reflecting-pool-coating-peeled-blistered/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Primer, heat, and water could all help explain the failures in the pools new polymer lining 11. What did a group of Priestley Medalists have to say about the future of chemistry? Source: Chemical & Engineering News Link: https://cen.acs.org/acs-news/group-priestly-medalists-say-future/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen A lot. They touched on how to solve big problems, how to collaborate, and how to overcome barriers 12. Editorial: We can have both prosperity and sustainability Source: Chemical & Engineering News Link: https://cen.acs.org/environment/editorial-prosperity-sustainability/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen The Lorax implores us to consume less to save the trees. Chemical innovations might allow us to protect the environment and human comforts 13. Groups cite huge health costs from EPAs power plant GHG rollback, vow to sue Source: Chemical & Engineering News Link: https://cen.acs.org/policy/regulation/epa-greenhouse-gas-emissions-deregulation/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen The agency says carbon pollution limits offer virtually no benefit, while critics predict more than 80,000 additional premature deaths 14. Skeletal editing can transform molecules biological activity Source: Chemical & Engineering News Link: https://cen.acs.org/synthesis/skeletal-editing-transform-biological-activity/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Oxygen-to-nitrogen swap changes a natural products mechanism of action 15. Business Watch: European pyrolysis plants get new owners, and more Source: Chemical & Engineering News Link: https://cen.acs.org/business/business-watch-european-pyrolysis-plants/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen Heres what were watching in the chemical and pharmaceutical industries this week 16. Custom genetic codes can now be created with ease Source: Chemical & Engineering News Link: https://cen.acs.org/biological-chemistry/biochemistry/custom-genetic-codes-george-church/104/web/2026/09?sc=230901_cenrssfeed_eng_latestnewsrss_cen A new understanding of transfer RNA biology means researchers can assign up to 34 codons to amino acids of their choosing Sources in this brief: Chemical & Engineering News. Selected 16 of 20 available items for this weekly brief.