Having already pre-empted the headlines with his announcement with Xi Jinping at APEC, Barack Obama upstaged everyone with his powerful and wide-ranging speech at Queensland University, where he urged the masses to rise up and demand action, writes Mungo MacCallum.

Peter Olson, Goonengerry. ‘Being at first sceptical that ebola virus could be an aerosol-transmissible disease, we are now persuaded by a review of experimental and epidemiologic data that this might be an important feature of disease transmission’.

Mike Mizzi, Byron Bay. Since WWI, when oil replaced coal as the major form of energy for transport and military applications, the nation that dominates the world oil markets and supplies dominates the world.