This is a story of mice and men — well, Viking mice and Viking men. A new study in BMC Evolutionary Biology shows that Viking conquerors brought more than just fear and trembling to the hearts of those they invaded — they also brought mice, stowed away on their ships, reports New Scientist's Andy Coghlan.

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A genome-wide association study that linked common genetic variants to salivary gland carcinoma risk has been retracted, according to Retraction Watch.

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