Science: How to harness the sun's energy more efficiently

Science commentator Dr Allan Blackman joins Lynn to look at new reseach into how the sun's energy can be converted into electricity more efficiently. At the moment silicon solar cells can only manage 10 - 15 % conversion, so the hunt is on for more efficient materials. And April 20 marks a big day for science: in 1862 Louis Pasteur demonstrates the process we've come to know as pasteurisation and in 1902 Marie and Pierre Curie successfully isolate radioactive radium salts. Allan Blackman is a Professor of Chemistry, School of Science, Auckland University of Technolog