Les États-Unis dominent toujours le marché des hydrocarbures

by Connaissance des Energies, 8 juin 2017


Les États-Unis sont restés les premiers producteurs mondiaux de gaz naturel et d’hydrocarbures liquides en 2016 selon un article publié hier par l’EIA américaine. État des lieux.

La reprise de la hausse de production américaine d’hydrocarbures liquides est, selon IFP Énergies nouvelles, due pour moitié au pétrole de schiste mais aussi à une augmentation de la production des liquides de gaz naturel et de celle de pétrole issu de gisements offshore (fruit des investissements décidés entre 2010 et 2014 lorsque les cours du pétrole étaient au plus haut).

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What Happened to Spot? A Solar Update

by Stephanie Osborn, June 7, 2017


I’ve been keeping a spreadsheet since late last summer, and here are the results, as of June 6th, 2017. (Quick and easy data source, the daily sunspot image archives from Solarham.)

This data (through March; I’ve updated it since then) was posted on Jerry Pournelle’s blog a while back, and it elicited several questions from readers, who didn’t understand the information contained therein. So here is an effort to elaborate on the data, for those of you who aren’t astronomers/ astrophysicists and don’t want to have to keep up with all this stuff.

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The oldest fossil mushroom

by Sam W. Heads et al., June 7, 2017, in PLOS/One


A new fossil mushroom is described and illustrated from the Lower Cretaceous Crato Formation of northeast Brazil. Gondwanagaricites magnificus gen. et sp. nov. is remarkable for its exceptional preservation as a mineralized replacement in laminated limestone, as all other fossil mushrooms are known from amber inclusions. Gondwanagaricites represents the oldest fossil mushroom to date and the first fossil mushroom from Gondwana.

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