Dr. Robert Sterner, director of the Large Lakes Observatory at UMD, on why large lakes are so important

Just five lakes contain more than half of the Earth's liquid surface fresh water. Dr. Robert Sterner, director of the Large Lakes Observatory (LLO) at UMD, has been giving public talks about the 'outsized' role large lakes play in our lives. He spoke with Ann Possis May 1. You can learn  more about the work of the LLO here.