Precession modulates the poleward expansion of atmospheric circulation to the Arctic Ocean by Yi Zhong, Zhengyao Lu, Stefanie Kaboth-Bahr, Jimin Yu, Keiji Horikawa, Mark J. Dekkers, Juan C. Larrasoaña, Peter D. Clift, Michael E. Weber, Flor Vermassen, Sev Kender, Chijun Sun, Hu Yang, Xianfeng Wang, Camilla S. Andresen, Yanguang Liu, Haiwei Zhang, Zhengyang Dai, Lu Niu, Jingyu Zhang, Xuguang Feng, Debo Zhao, Wenyue Xia, Sheng Yang, Hai Li, Qingsong Liu

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Energetic and genomic potential for hydrogenotrophic, formatotrophic, and acetoclastic methanogenesis in surface-expressed serpentinized fluids of the Samail Ophiolite by Alta E. G. Howells, Alta E. G. Howells, Lilja M. Quinn, Lilja M. Quinn, Miguel G. Silva, Miguel G. Silva, Kylie Akiyama, Kylie Akiyama, Lucas M. Fifer, Lucas M. Fifer, Grayson Boyer, Srishti Kashyap, Kirt Robinson, Kirt Robinson, Jared Broddrick, Everett L. Shock, Tori M. Hoehler

“…While those fluids contain abundant H2 to fuel hydrogenotrophic methanogenesis (CO2 + 4H2 ➔ CH4 + 2H2O), the concentration of CO2 is very low due to the hyperalkalinity (> pH 11) and geochemistry of the fluids. As a result, species such as formate and acetate may be important as alternative methanogenic substrates. …”
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Statistically Coherent Calibration of X-Ray Fluorescence Spectrometry for Major Elements in Rocks and Minerals by Surendra P. Verma, Sanjeet K. Verma, M. Abdelaly Rivera-Gómez, Darío Torres-Sánchez, Lorena Díaz-González, Alejandra Amezcua-Valdez, Beatriz Adriana Rivera-Escoto, Mauricio Rosales-Rivera, John S. Armstrong-Altrin, Héctor López-Loera, Fernando Velasco-Tapia, Kailasa Pandarinath

“…If the analytical instruments were routinely calibrated from the UWLR model, this action would make the science of geochemistry more quantitative than at present.…”
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How long does carbon stay in a near-pristine central Amazon forest? An empirical estimate with radiocarbon by I. Chanca, I. Chanca, I. Chanca, I. Levin, S. Trumbore, K. Macario, K. Macario, K. Macario, J. Lavric, J. Lavric, C. A. Quesada, A. Carioca de Araújo, C. Quaresma Dias Júnior, H. van Asperen, S. Hammer, C. A. Sierra

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