Hormone replacement therapy (HRT) for menopause is hotly debated. Is it safe? Experts answer common questions.
There's a growing movement in medicine: a push to find and treat children at risk for autism at younger and younger ages -- even in the womb -- in the hope that their social and emotional development can be boosted to normal or near-normal levels.
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Flaws in computer modelling led to apocalyptic forecasts of how the deadly Ebola virus would spread in West Africa, specialists said. Many of the models were off-the-shelf software that failed to take into account complexities and uncertainties in the way the disease spread in Guinea, Sierra Leone and Liberia, they said on Tuesday. "In the early days of the Ebola outbreak, a lot of people got into the forecasting business," said Aaron King of the University of Michigan in the United States, who led a probe into why so many predictions turned out to be wildly wrong. "They did it using appealingly simple mathematical models, and the result was a series of warnings that alerted the world, quite rightly to the seriousness of the situation.