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On this week’s programme we look to the robotic future of warfare, empowering business in Africa – and the ethical questions these debates raise. Defence expert and Obama adviser, Dr Peter W Singer offers his insights into how the use of robots in war is radically changing the meaning and implications of going to war. Ghanain-American economist George Ayittey discusses how best to develop community business in Africa. In response to the economic downturn he urges a move from micro-financing of individuals to what he calls ‘meso financing’ - investing in community groups to maximise production and income. And the ethical problems raised on the cutting edge of science, with renaissance scholar and human embryo regulator Lisa Jardine.