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The increasing atmospheric burden of the greenhouse gas sulfur hexafluoride (SF6) 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (12) : 7271-7290
作者:  Simmonds, Peter G.;  39;Doherty, Simon
收藏  |  浏览/下载:11/0  |  提交时间:2020/08/18
Modelling the potential impacts of the recent, unexpected increase in CFC-11 emissions on total column ozone recovery 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (12) : 7153-7166
作者:  Keeble, James;  Abraham, N. Luke;  Archibald, Alexander T.;  Chipperfield, Martyn P.;  Dhomse, Sandip;  Griffiths, Paul T.;  Pyle, John A.
收藏  |  浏览/下载:12/0  |  提交时间:2020/06/22
Recycling and metabolic flexibility dictate life in the lower oceanic crust 期刊论文
NATURE, 2020, 579 (7798) : 250-+
作者:  Zhou, Peng;  Yang, Xing-Lou;  Wang, Xian-Guang;  Hu, Ben;  Zhang, Lei;  Zhang, Wei;  Si, Hao-Rui;  Zhu, Yan;  Li, Bei;  Huang, Chao-Lin;  Chen, Hui-Dong;  Chen, Jing;  Luo, Yun;  Guo, Hua;  Jiang, Ren-Di;  Liu, Mei-Qin;  Chen, Ying;  Shen, Xu-Rui;  Wang, Xi;  Zheng, Xiao-Shuang;  Zhao, Kai;  Chen, Quan-Jiao;  Deng, Fei;  Liu, Lin-Lin;  Yan, Bing;  Zhan, Fa-Xian;  Wang, Yan-Yi;  Xiao, Geng-Fu;  Shi, Zheng-Li
收藏  |  浏览/下载:37/0  |  提交时间:2020/05/13

The lithified lower oceanic crust is one of Earth'  s last biological frontiers as it is difficult to access. It is challenging for microbiota that live in marine subsurface sediments or igneous basement to obtain sufficient carbon resources and energy to support growth(1-3) or to meet basal power requirements(4) during periods of resource scarcity. Here we show how limited and unpredictable sources of carbon and energy dictate survival strategies used by low-biomass microbial communities that live 10-750 m below the seafloor at Atlantis Bank, Indian Ocean, where Earth'  s lower crust is exposed at the seafloor. Assays of enzyme activities, lipid biomarkers, marker genes and microscopy indicate heterogeneously distributed and viable biomass with ultralow cell densities (fewer than 2,000 cells per cm(3)). Expression of genes involved in unexpected heterotrophic processes includes those with a role in the degradation of polyaromatic hydrocarbons, use of polyhydroxyalkanoates as carbon-storage molecules and recycling of amino acids to produce compounds that can participate in redox reactions and energy production. Our study provides insights into how microorganisms in the plutonic crust are able to survive within fractures or porous substrates by coupling sources of energy to organic and inorganic carbon resources that are probably delivered through the circulation of subseafloor fluids or seawater.


  
Mission to trace 期刊论文
NATURE, 2020, 581 (7806) : 18-18
作者:  Cyranoski, David
收藏  |  浏览/下载:7/0  |  提交时间:2020/07/03

Fearing an economic crisis of unprecedented proportions, Jim Yong Kim is rolling out a plan to halt the pandemic rather than weather it out.


Fearing an economic crisis of unprecedented proportions, Jim Yong Kim is rolling out a plan to halt the pandemic rather than weather it out. Jim Yong Kim at an annual meeting for World Bank, which he led from 2012-2019.


  
Late Mesozoic sediment provenance on Georges Bank: Enlargement of river drainages to the Atlantic Ocean in the Late Jurassic-Early Cretaceous 期刊论文
AAPG BULLETIN, 2019, 103 (6) : 1321-1350
作者:  Chavez, Isabel;  Pe-Piper, Georgia;  Piper, David J. W.;  MacRae, R. Andrew
收藏  |  浏览/下载:3/0  |  提交时间:2019/11/26
Morphodynamics of meandering streams devoid of plant life: Amargosa River, Death Valley, California 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2019, 131: 782-802
作者:  Ielpi, Alessandro
收藏  |  浏览/下载:0/0  |  提交时间:2019/11/26
UK gene bank's early fruits 期刊论文
SCIENCE, 2019, 363 (6432) : 1126-1126
作者:  Brainard, Jeffrey
收藏  |  浏览/下载:2/0  |  提交时间:2019/11/27
World Bank head resigns early 期刊论文
SCIENCE, 2019, 363 (6424) : 210-210
作者:  Guterman, Lila
收藏  |  浏览/下载:1/0  |  提交时间:2019/11/27
BIOLOGY IN THE BANK 期刊论文
SCIENCE, 2019, 363 (6422) : 18-20
作者:  Kaiser, Jocelyn;  Gibbons, Ann
收藏  |  浏览/下载:1/0  |  提交时间:2019/11/27
Low-gradient, single-threaded rivers prior to greening of the continents 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (24) : 11652-11657
作者:  Ganti, Vamsi;  Whittaker, Alexander C.;  Lamb, Michael P.;  Fischer, Woodward W.
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/27
prevegetation alluvium  cross-stratification  Neoproterozoic Era