info:oai:pure.iiasa.ac.at:14544info:ofi/fmt:xml:xsd:journalJasechkoS.Jasechko, S.PerroneD.Perrone, D.BefusK.M.Befus, K.M.Bayani CardenasM.Bayani Cardenas, M.FergusonG.Ferguson, G.GleesonT.Gleeson, T.LuijendijkE.Luijendijk, E.McDonnellJ.J.McDonnell, J.J.TaylorR.G.Taylor, R.G.WadaY.Wada, Y.KirchnerJ.W.Kirchner, J.W.61027 April 20171752-0894Global aquifers dominated by fossil groundwaters but wells vulnerable to modern contaminationNature Geoscience425-429article