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How the biofuel of the future might be diimethylfuran, made from fructose by a two-step catylitic process. Norwegian research suggests social explanation for why the first-born children in families have higher IQs and do better than their younger siblings. The evolution of disease resistance is a story of viral infection – what does that mean today? Grey nurse sharks are disapearing from Australian waters. Plus, what will Unesco consider as it meets to decide new World Heritage sites.