Forecasting Evolving Coastlines. England's 130 million square metres of shoreline - much of it wildlife habitat - is under constant threat; environmental agencies such as English Nature say that much of the vital terrain will have disappeared by 2025. How this impacts on man and wildlife will depend on our ability to forecast the way sands, mud and sediments move around our coasts. In n order to make these predictions scientists need to establish mathematical models, allowing for the complicated effects of tides and changing waves. That's just what a team of researchers in the Netherlands has embarked on. They join Quentin Cooper to discuss what the lessons they've learned can tell us about whether we should invest in a property by the sea. Producer Colin Grant