British Prime Minister David Cameron answers questions after he delivered a keynote speech to the delegates at the Global Health Policy Summit at the Guildhall in London, Wednesday, Aug. 1, 2012. The ... more 
British Prime Minister David Cameron answers questions after he delivered a keynote speech to the delegates at the Global Health Policy Summit at the Guildhall in London, Wednesday, Aug. 1, 2012. The speech focus on life sciences ahead of the Global Investment Conference on Life Sciences on Thursday. (AP Photo/Sang Tan, Pool) less 
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Associated Press | Photo By Sang Tan, Pool
Thu, Aug 2, 2012 6:30 PM EDT