Gregor Semieniuk

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Articles

Bold Climate Fixes Won’t Wreck Middle Class Retirement Plans

Nov 1, 2023 | scientificamerican.com | Lucas Chancel |Gregor Semieniuk

Oil and gas industries just enjoyed a bumper profit year, with shareholders seeing record payouts. In its wake, Europe’s Shell and BP both walked back on their ambitious low-carbon transition plans, with firms across the sector increasing their investing in new production. That’s not good news for climate change, largely driven by burning fossil fuels.
Technical comment on “Fairness considerations in global mitigation investments”

May 18, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Jayati Ghosh

Pachauri et al. (1) have calculated fair regional shares of financing global climate change mitigation investments through 2030 using operational versions of ‘responsibility’, ‘capability’, and ‘needs’. The authors find that these fairness considerations imply scaled up interregional investment flows. Higher capability, which is based on affluence (per capita GDP or capital stock), translates into higher fair investment shares.
Renewable energy in China’s abandoned mines

May 18, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Gang Lin

(0)eLetters eLetters is a forum for ongoing peer review. eLetters are not edited, proofread, or indexed, but they are screened. eLetters should provide substantive and scholarly commentary on the article. Embedded figures cannot be submitted, and we discourage the use of figures within eLetters in general. If a figure is essential, please include a link to the figure within the text of the eLetter. Please read our Terms of Service before submitting an eLetter. Log In to Submit a Response
Disentangling the activity-selectivity trade-off in catalytic conversion of syngas to light olefins

May 18, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Feng Jiao

Editor’s summaryThe production of light olefins from a mixture of hydrogen and carbon monoxide (syngas) over metal-oxide zeolite catalysts is complicated by competing side reactions. Jiao et al. show that the Brønsted acid sites created in the zeolite AlPO-18 by germanium substitution were highly active for carbon–carbon coupling of the intermediates to olefins but much weaker for the unwanted size reactions of hydrogenation and olefin oligomerization.
When the enemy of an enemy is no friend

May 18, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Chris T. Darimont

(0)eLetters eLetters is a forum for ongoing peer review. eLetters are not edited, proofread, or indexed, but they are screened. eLetters should provide substantive and scholarly commentary on the article. Embedded figures cannot be submitted, and we discourage the use of figures within eLetters in general. If a figure is essential, please include a link to the figure within the text of the eLetter. Please read our Terms of Service before submitting an eLetter. Log In to Submit a Response
Generality-oriented optimization of enantioselective aminoxyl radical catalysis

May 18, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Jonas Rein

Editor’s summaryWhen chemists optimize catalysts, they typically work with a single substrate in a test reaction. Then, the catalyst producing the best outcome with that substrate is applied to a broader range of substrates. Rein et al. report a different approach: screening catalysts concurrently on a diverse pool of substrates with the aim of optimizing median enantioselectivity across the pool.
In Other Journals

May 11, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Bianca Lopez

Coastal Ecology Facilitating a foundation speciesBianca LopezSeagrasses act as habitat for many coastal species but are threatened by global climate change. Studies have shown a positive relationship between seagrasses and lucinid bivalves, which shelter among seagrass roots and host bacteria that detoxify sulfides accumulating in the sediment. In a field survey, de Fouw et al. determined whether this facilitative relationship occurs in seagrasses found in western European seas.
Discovery of target genes and pathways at GWAS loci by pooled single-cell CRISPR screens

May 4, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |John Morris

Editor’s summaryGenome-wide association studies (GWASs) identify links between individual gene variants and various traits and diseases. Unfortunately, the findings from these studies cannot be used to determine whether the gene variants associated with a disease directly cause the condition or just happen to be located near biologically relevant genes or regulatory regions.
Schrödinger cat states of a 16-microgram mechanical oscillator

Apr 20, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Marius Bild

Schrodinger’s cats, kittens, and lionsThe idea of Schrodinger’s cat being both alive and dead at the same time—its fate revealed only upon inspection—came from a thought experiment that pointed out an absurdity in the interpretation of quantum mechanics at the time. However, because such superposition states have now been prepared in many different quantum systems, the question is where do the classical and quantum worlds part company? Bild et al.