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Danelle van Zyl-Hermann, a Gates scholar with an interest in the emotional history of South Africa, explains why the study of society's sentiments can unlock a better understanding of the past.

̽»¨Ö±²¥emoticons used on Twitter are a language in themselves and are taking on new and often surprising meanings of their own, according to new research.

They’ve had viewers cowering behind the sofa since ‘Doctor Who’ began – but what exactly is it that makes people so frightened of the Daleks? A new study by a Cambridge researcher claims to have the answer.