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As emerging markets continue to fall and currencies are weakening, are we heading for another financial meltdown? Noble-prize economist professor Kenneth Rogoff says market volatility is not the beginning of a meltdown, although much of it is down to economic weakness in China. Also, how the business of selling scent involves more than just a sense of smell. We speak to professor Charles Spence, head of the Modal Research Lab at Oxford University who advises the fragrance industry on how to sell their products. And our regular columnist Jeremy Wagstaff of Reuters, tells us how websites that promise to deliver awesome content have ended up killing off the wow factor on social media.