The issue focused attention at an engineering university when Indian billionaire Lakshmi Mittal donated £500,000 to UK universities this week. Prof Narendra Acharya is professor of sustainable engineering at Cambridge University's Engineering Innovation Laboratory.He gave £300,000 in cash and shares in firms including Rolls Royce and Siemens to universities including Edinburgh and Durham."That money should go towards universities like ours," Prof Acharya told BBC Radio Scotland."That money should go towards improving education at universities around the world."Engineering universities around