ELZBIETA ZIMMERMANN fears her barn will collapse. She has put off repairs since 2017, when she heard that the government would build a mega-airport on the site of her farm in Podoryszew, 50km west of Warsaw. The project has been put on ice since Poland’s populist Law and Justice (PiS) party, which championed it, was voted out in late 2023. PiS’s centre-right successors have promised more fiscal responsibility. But scrapping mega-projects means sunk costs and dashed hopes.