The south Wales town of Pontypridd saw cars submerged, people bailing floodwater out of their homes using bins, and the beautiful park and lido transformed into a brown mess, as parts of the UK were flooded.

But, it's nothing new. Pontypridd was severely flooded just four and a half years ago – and these are scenes that play out around the UK every winter.

So, is the way we warn people about floods failing?

We’re going to unpick exactly how floods are forecast – and what went wrong – with natural hazards researcher and hydrologist, Professor Hannah Cloke.

Also this week, sharing your microbiome with friends, alternative plastics, and was the most recent climate summit good COP or bad COP?

Presenter: Victoria Gill
Producers: Gerry Holt, Sophie Ormiston & Ella Hubber
Editor: Martin Smith
Production Co-ordinator: Jana Bennett-Holesworth 

To discover more fascinating science content, head to bbc.co.uk search for BBC Inside Science and follow the links to The Open University.