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Mozilla has unveiled a prototype for a basic smartphone it says it can sell for as little as $25. The company's chief operating officer, Jay Sullivan, tells us it can still run most of the popular apps and expects billions of people across the developing world to want one. The G20 has agreed it wants to boost global growth by two trillion dollars over the next half decade, though it has not decided exactly how. And, with just four months to go the World Cup will Brazil be ready?