Gregor Semieniuk

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.

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.

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

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.

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