Simon Potter, University of Bristol
Global media tycoon Rupert Murdoch has announced his retirement as chairman of Fox and News Corp, making way for his son Lachlan. He has been demonised as a puppet master who would pull the strings of politicians behind the scenes, as a man with too much power. But what influence did he and his fellow media moguls really wield?
Anders Sandberg, University of Oxford
It is a cliche that not knowing history makes one repeat it. As many people have also pointed out, the only thing we learn from history is that we rarely learn anything from history. People engage in land wars in Asia over and over. They repeat the same dating mistakes, again and again. But why does this happen? And will technology put an end to it?