Extreme feels-like temperatures, heat stress days and tropical nights have all become dramatically more frequent, long and severe over the past six decades, a study finds.

The missive was signed by Modernisation Fund recipients Bulgaria, Croatia, Czechia, Estonia, Greece, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia and Slovenia.

The Rhine is one of Europe’s most important trade arteries, with petroleum products accounting for more than a fifth of cargo transported on it in 2024.