Αρχειοθήκη ιστολογίου

Τρίτη 29 Μαΐου 2018

In This Issue [This Week in PNAS]

Lead pollution in Greenland ice links emissions and economic activity Ice-core analysis. Lead and silver ore mining powered ancient economies, but previously reported measurements of lead pollution in Arctic ice were based on sparse sampling and inconclusive dating. Joseph McConnell et al. (pp. 5726–5731) used precisely dated measurements of lead...

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