Clay weekly context brief for the Chemistry category (ISO week 2026-W35). 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. For better urban air quality, choose city trees wisely Source: Chemical & Engineering News Link: https://cen.acs.org/environment/atmospheric-chemistry/air-quality-ozone-isoprene-nox/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Scientists find that trees that emit high levels of isoprene may contribute to surface-level ozone pollution 2. Crossword: Be pre-paired Source: Chemical & Engineering News Link: https://cen.acs.org/education/science-communication/crossword-be-pre-paired/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen A puzzle that reveals bits of protein in unexpected places 3. Quiz: How much do you know about caterpillar chemistry? Source: Chemical & Engineering News Link: https://cen.acs.org/biological-chemistry/periodic-graphics-quiz-caterpillars/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Test your knowledge of the biochemical battle between caterpillars and plants 4. C&EN weekly chemistry news quiz, Aug. 21 Source: Chemical & Engineering News Link: https://cen.acs.org/analytical-chemistry/microscopy/cen-weekly-chemistry-news-quiz-august-21/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Test your knowledge of our stories on microscopy, conducting COFs, a cancer vaccine, and more 5. Ebola vaccine enters Phase 3 trial. But will it work on a new target? Source: Chemical & Engineering News Link: https://cen.acs.org/pharmaceuticals/vaccines/ebola-vaccine-trial-drc/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen 70,000 doses of Ervebo have made it to the Democratic Republic of the Congo, but the vaccine is untested against the currently circulating species 6. EPA says lead scavenger in airplane fuel poses health risk Source: Chemical & Engineering News Link: https://cen.acs.org/policy/chemical-regulation/epa-says-lead-scavenger-airplane-fuel-health-risk/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen The agency is asking for public comment on ethylene dibromide, added to leaded fuels used in some small aircraft 7. Modified DNA-origami method images transcription over time Source: Chemical & Engineering News Link: https://cen.acs.org/analytical-chemistry/structural-biology/modified-dna-origami-method-images-transcription/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen The motion of RNA polymerase can be tracked over longer periods by adding dye cycling to a DNA-origami rotor 8. Jake Remacle wins 2026 ACS National Chemical Technical Professional Award Source: Chemical & Engineering News Link: https://cen.acs.org/acs-news/jake-remacle-2026-acs-national-chemical-technical-professional/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen The Dow R&D technologist started his journey 28 years ago and had no idea how rewarding the job would be 9. Drug industry leaders size up Trumps FDA commissioner nominee Source: Chemical & Engineering News Link: https://cen.acs.org/policy/regulation/trump-fda-commissioner-nominee-heidi-overton-drug-industry/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen White House aide Heidi Overton has been tapped to lead the agency after a tumultuous period 10. Microbes could solve the PFAS problem. Heres what it will take Source: Chemical & Engineering News Link: https://cen.acs.org/environment/persistent-pollutants/forever-chemicals-breakdown-microbes-fluoride-toxic/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen To break down forever chemicals, bacteria and fungi need a way to avoid or evade their own toxic by-products 11. In a first, an mRNA cancer vaccine succeeds in late-stage clinical trial Source: Chemical & Engineering News Link: https://cen.acs.org/pharmaceuticals/vaccines/mrna-cancer-vaccine-succeeds-clinical-trial/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen The vaccine from Merck and Moderna prevented melanoma recurrence in combination with Mercks Keytruda 12. Business Watch: Dry Rhine crimps another chemical maker; Khartis Therapeutics launches Source: Chemical & Engineering News Link: https://cen.acs.org/business/rhine-drought-activist-investor-pfas/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Heres what were watching in the chemical and pharmaceutical industries this week 13. A dopant-free way to make semiconducting COFs Source: Chemical & Engineering News Link: https://cen.acs.org/materials/electronic-materials/cof-semiconducting-mof/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Built from neutral radical building blocks, these frameworks have potential for applications in batteries 14. This microscopy method lights up without fluorescence Source: Chemical & Engineering News Link: https://cen.acs.org/analytical-chemistry/imaging/superresolution-luminescent-microscopy/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Brighter electrochemical reaction powers superresolution imaging 15. The race to replace a salmon-killing tire chemical Source: Chemical & Engineering News Link: https://cen.acs.org/business/specialty-chemicals/race-replace-salmon-killing-tire-chemical/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Alternatives to 6PPD, a critical antiozone agent for rubber, are emerging, but will they be ready soon? 16. First human trials of designer protein therapies stun US neuroscientists Source: Chemical & Engineering News Link: https://cen.acs.org/biological-chemistry/biotechnology/human-trial-chemogenetic-brain-therapy/104/web/2026/08?sc=230901_cenrssfeed_eng_latestnewsrss_cen Chinese researchers are testing DREADDs, a gene therapy to turn down neuronal activity, in the clinic Sources in this brief: Chemical & Engineering News. Selected 16 of 20 available items for this weekly brief.