A massive floodwave moving across Central Europe is threatening new areas and raising concerns among residents and leaders.

The European Union will make billions of euros available to help central Europe recover from severe floods, European Commission President Ursula von der Leyen said on Thursday, as she pledged support for regions that have been devastated by the deluge.

As Storm Boris brought devastating floods to central and eastern Europe, skeptics on social media dismissed the role of climate change in making the deadly rainfall more intense. But scientists have established ties between a warmer atmosphere and torrential rain,