In an unusual study, Norwegian scientists claim people born during periods of solar calm may live around five years longer than those born when the sun is feisty.
挪威科学家进行的一项独一无二的研究称：出生于太阳平静期的人的寿命可能比出生于太阳活跃期的人长五年左右。They argue peak solar activity brings higher levels of ultraviolet radiation to Earth, which may increase infant mortality by degrading folic acid, or vitamin B9.Both of these are key to rapid cell division and growth that happens during pregnancy1.The bizarre conclusion was reached when the team overlaid demographic data of Norwegians born between 1676 and 1878 with observations of solar activity.The lifespan of those born in periods of solar maximum - interludes marked by powerful solar flares2 - was 5.2 years shorter on average than those born during a solar minimum, they found.Solar activity at birth decreased the probability of survival to adulthood, thus truncating3 average lifespan, according to the paper published in the journal Proceedings4 of the Royal Society B.There was a stronger effect on girls than boys, the study claims.Solar maxima are marked by an increase in sunspots, solar flares and coronal mass ejections that can disrupt radio communications and electrical power on Earth, damage satellites and disturb navigational equipment.
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1 pregnancy n.怀孕，怀孕期 参考例句： Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。 Smoking during pregnancy increases the risk of miscarriage.怀孕期抽烟会增加流产的危险。
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