At this stage, we are all pretty familiar with the circular way in which nature works.

If we think of the hydrologic cycle for instance we know there are four main parts Evaporation, Convection, Precipitation and Collection, etc.

But there are still, even to this day, aspects of the earth's cycles that we are only beginning to understand and, in some cases, finding out they exist at all.

My next guest is one researcher who is looking at the phenomena known as Turbidity currents and the complex relationship they have with our deep oceans.

Peter Talling is a Professor in Submarine Geohazards in the Department of Earth Sciences and Department of Geography at the University of Durham - he joins to discuss.