Chuck Hagel, Barack Obama's nominee for defence secretary, is attracting brickbats because he joined a campaign to eliminate nuclear weapons. Sweden has scrapped an old law requiring the sterilisation of anyone who has a sex change. In Rio de Janeiro, plans to demolish a popular high school to make way for Olympic buildings have been put on ice. These apparently unconnected events all have one thing in common. The campaigns involved (Global Zero, All Out and Meu Rio) were incubated by Purpose.com, a young company headquartered in New York.
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