Usually it takes her an hour-and-a-half each week to manually wind the clock collection, but turning them back takes longer, she said. One particularly challenging timepiece is a walnut long case ...

Attention all insomniacs. A new study has found moving the clocks one hour forward in spring and one hour back in autumn has a short-lived, though ­substantial effect on how long we sleep.

Usually it takes her an hour-and-a-half each week to manually wind the clock collection, but turning them back takes longer, she said. One particularly challenging timepiece is a walnut long case ...