Europe heatwave live: Germany braced for temperatures ‘well over 40C’; extreme heat warnings for England

Forecasters say hottest conditions spreading into central and eastern Europe

• After decades of climate warnings, why is Europe so unprepared for rising heat?

Seawater is seeping into Italy's longest river as the waterway starts to run dry in the heatwave, hitting a farming heartland that produces the milk for Parmesan cheese.

The Po River has never fallen this low so early in the year, raising fears of a devastating drought in July in this corner of northern Italy.