Health

The hazards of living on the right side of a time zone border

The sun both rises and sets later in the western parts of time zones, by about an hour at the extremes. If sunrise in Nashville, Tennessee is 6:30 a.m., it's about 7:30 a.m. in Amarillo, Texas. Similarly, if sunset in Nashville ...

Health

Regular bedtimes stop children getting 'jet lag'

What happens in the early years of a person's life has a profound effect on how they fare later on. Thousands of research papers – many of them using the rich data in the British Birth Cohort studies – have shown that ...

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