The decision thus fell to Mr Cobos, whose relationship with the president had become frosty.

ECONOMIST: Argentina

Luis Pacheco-Cobos of the National Autonomous University of Mexico and his colleagues discovered this by following mushroom gatherers from a village in the state of Tlaxcala for two rainy seasons.

ECONOMIST: Men and women navigate differently

Mr Cobos's vote should undermine this way of governing.

ECONOMIST: Argentina