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Jos Wassink

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Now is the time to make plans for a climate-proof the Netherlands in 2150, stated hydraulic engineering expert Bas Jonkman in his Dies Natalis lecture on Friday. The high water level over the last few months gave his words even greater urgency.

It is many a parent’s nightmare: a swallowed button cell battery from a toy, car key or LED candle. After all, these easily get stuck in the throat. The mucus then conducts the electricity and that dissolves the tissue so that a hole burns in it. A picture of what such a battery does to…