AAP: Prime Minister Kevin Rudd will announce a $100 million clean coal research institute at a meeting with business and union leaders and environmentalists. Executives from mining and energy giants such as BHP and Santos, conservationists and union leaders, have been invited to the roundtable meeting in Canberra where the prime minister will make the announcement. The aim of the institute is to make Australia the world hub for the climate-change-fighting technology. The …