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ComputingFinding networks within networks
A new mathematical procedure, or algorithm, picks out those members within a larger network—for instance, related sites on the World Wide Web—that have especially close ties.
By Peter Weiss -
Health & MedicineClot busters may put elderly people at risk
Very elderly people who get clot-dissolving drugs immediately after a heart attack are more likely to die during their hospital stay than similar-age patients who don't get them.
By Nathan Seppa -
When brains wring colors from words
Brain-scan data indicate that one type of synesthesia, in which people involuntarily see vivid colors while listening to spoken words, is more like a color hallucination than an attempt to imagine colors.