
May 1, 2017 Cover
Volume 95, Issue 18
COVER: A worker sets a net before harvesting salmon in a farm pen near Eastport, Maine.
Volume 95, Issue 18
Fish farmers face feed and ecosystem constraints as they supply a growing portion of the world’s protein
COVER: A worker sets a net before harvesting salmon in a farm pen near Eastport, Maine.
Credit: Associated Press
» Full Article
May 1, 2017 Issue
Volume 95, Issue 18
May 1, 2017 Issue, Vol. 95 | Iss. 18
Fish farmers face feed and ecosystem constraints as they supply a growing portion of the world’s protein
(pp. 28-33)
Features
Science & Technology
Practitioners, students, and fans join with throngs around world in support of science (pp. 12-13)

Science & Technology
Flow chemistry eyed as key to supplying materials, medicines during extraterrestrial journeys (pp. 20-21)
News of the Week
Whipping phosphorus into chiral shape
Catalyst synthesizes phosphates and phosphoramidates with high stereoselectivity and yield
(p.5)Finding a role for polyglutamine in neurodegenerative diseases
Repeating amino acid sequence seen in disease-related proteins may regulate cellular garbage disposals
(p.7)Zinc sponge protects rechargeable battery
Unconventional form of zinc electrode leads to low-cost, long-lasting, safe battery
(p.7)Getting a bigger picture with superresolution microscopy
Chip-based illumination enables simple microscopy set-up and wide field of view
(p.8)Making bone transparent
Researchers adapt tissue-clarifying technique to clear minerals from bone too
(p.8)Superresolution microscopy shows bigger picture
Chip-based illumination enables superresolution microscopy with a wide field of view
(p.8)Chemists march for science
Practitioners, students, and fans join with throngs around world in support of science
(pp. 12-13)Forge Therapeutics scores $15 million in venture funding
The proceeds will help the biotech firm push its antibiotics program toward human studies
(p.14)PPG makes third and ‘last’ offer to buy AkzoNobel
Paint firm’s $28.8 billion offer comes with conditions to smooth the way
(p.14)Chemical industry off to a strong 2017
First-quarter earnings surpass expectations thanks to strong sales, pricing
(p.15)Personnel changes bring U.S. chemical industry group closer to EPA, Congress
Former senator joins firm lobbying for American Chemistry Council, association officials move into agency
(p.18)U.S. sanctions chemists for gas attack on civilians in Syria
American companies barred from doing business with them and their U.S. assets frozen
(p.18)Washington’s revolving door
Personnel changes boost ties between chemical industry group and EPA, Congress
(p.18)Departments

Business
Originator of Cradle to Cradle is confident young chemists are poised to finally make manufacturing sustainable
(pp. 26-27)
Fish farmers face feed and ecosystem constraints as they supply a growing portion of the world’s protein
(pp. 28-33)Concentrates
(pp. 16-17)

- KMG will buy fluid specialist Flowchem
- BASF, Umicore settle cathode suit
- DuPont, Delaware create incubator
- U.S. fertilizer projects start up
- BP will exit big Chinese joint venture
- Acetylated wood planned for China
- BASF buys ZedX for digital farming
- Avantor buys high-purity chemical supplier
- Evonik opens lab serving oil sector
- HitGen works with Scripps and Calibr
- DSM Sinochem boosts Dutch output
- Two Pore Guys gets initial funding
- Business Roundup
ACS News

Government & Policy

Science & Technology
More sustainable approaches to synthesizing ammonia could re-revolutionize agricultural fertilizer production
(pp. 22-23)
Un catalizador sintetiza fosfatos y fosforamidatos con una gran estereoselectividad y rendimiento
(p.5)
Flow chemistry eyed as key to supplying materials, medicines during extraterrestrial journeys
(pp. 20-21)
Insect larvae that degrade polyethylene offer a potential way to process waste at recycling centers and landfills
(pp. 10-11)
Researchers at NC State analyze the first structures from the Max Weaver Dye Library’s 98,000 vials of dyes
(pp. 24-25)
Fungal bioluminescence could be adjusted for color and intensity
(p.10)
Systematic study catalogs numerous effects on film morphology, reaction kinetics, and device performance
(p.11)
Less nitrogen will be available to marine ecosystems as increasing atmospheric carbon dioxide lowers the pH of oceans
(p.10)
Nanoparticle-on-nanorod material enables four-step reaction in one pot to prepare pharmaceutical intermediates
(p.10)
Approach enhances customizability and efficiency of poly(α-hydroxy acid) synthesis
(p.11)