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Scientists Grow Mice Embryos in a Mechanical Womb

[aggregation-styles] The New York Times Subscription The mouse embryos looked perfectly normal. All their organs were developing as expected, along with their limbs and circulatory and nervous systems. Their tiny hearts were beating at a normal 170 beats per minute. But these embryos were not growing in a mother mouse....

Twin Births in US Now Going Down, at Lowest Level in Decade

NEW YORK — Fewer U.S. families are seeing double, according to a government report that finds a drop in new twins. Twin births steadily increased for more than three decades, driven largely by older white moms undergoing fertility treatments. But the rate of twin births apparently peaked in 2014 and...

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