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It involved about 6,800 people in Iran, ages 50-75, some with previous heart problems and others without them. All got advice on healthy lifestyles and half also were given polypills.
If any metal scratches against the card, it could do some serious damage to it.
The remains of a prehistoric primate that lived high in the Andes 20 million years ago and was so small it could fit in your hand is helping scientists learn more about how human brains evolved.
About a dozen MPs have had infants in a parliamentary baby boom, and Prime Minister Jacinda Ardern last year became New Zealand's first premier to take maternity leave and the world's second elected leader to give birth in office.