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G8 leaders have agreed on a plan to combat tax avoidance and evasion. We'll speak to economists Roger Bootle and Andrew Simms. After another night of riots in Brazil, what's going wrong in the country that put the 'B' in Brics? We go to the Paris Air Show to find out whether the defence industry has anything to be defensive about and finally Julian Bohne in Hamburg finds out why covering your house in green gunk might be the way forward.