Interest rates are on the rise not just here in Australia but in other parts of the globe as central banks and governments grapple with rising inflation. But what can central banks actually achieve? Former deputy governor of the Bank of England and now chair of NatWest Group, Sir Howard Davies discusses. And just as interest rates keep rising so do water levels. The Nepean-Hawkesbury valley is once again flooded. Dr Brian Cook from the University of Melbourne explains how among other factors, massive changes to land use and economic forces have disrupted the peak flows of our river systems. So what to do?