This is to certify that the article "Impacts of 25 years of groundwater extraction on subsidence in the Mekong delta, Vietnam", by P S J Minderhoud, G Erkens, V H Pham, V T Bui, L Erban, H Kooi and E Stouthamer
has been selected by the editors of Environmental Research Letters for inclusion in the exclusive ‘Highlights of 2017’ collection. Papers are chosen on the basis of referee endorsement, originality, scientific impact and breadth of appeal.