Will we run out of water – and if so, when? Will the Earth suffer? Explore how water drives modern conflict and is not about to stop.

Alok Jha is the science correspondent for ITV News in the UK. Before that, he did the same job at The Guardian for a decade, where he wrote news, features, comment and presented the award-winning Science Weeklypodcast. He has also reported live from Antarctica and presented many TV and radio programmes for the BBC. Alok's latest book The Water Book looks into water, a profoundly strange substance that defies the normal rules of chemistry, and how it has shaped the Earth, it's life and our civilisation.