Scientists say an El Nino weather event has started. Its effects will be felt everywhere in the form of heavier rainfall in some parts of the world and deeper droughts in others. What's the link with Climate Change? And is it making it harder for us to prepare?

On this week's edition of The Climate Question, Graihagh gets a briefing on El Nino from a leading expert; we travel to Peru to meet the coastal communities on the front line; and we hear how ancient civilisations not only learned to deal with El Nino, but managed to use it to their advantage.

Presenter Graihagh Jackson is joined by:Tom Di Liberto, Meteorologist at the National Oceanographic and Atmospheric Administration in the USDr George Adamson, Senior Lecturer in Geography, King's College LondonDr Laila Shahzad, Disaster Risk expert at Government College, Lahore.

Producer: Osman IqbalBBC reporter in Peru: Guillermo OlmoResearch: Octavia Woodward and Matt ToulsonSound: Tom BrignellSeries Producer: Simon WattsEditor: China Collins