Twice a year we change the clocks - and twice a year we ask why. We get two writers to hash it out in this week's Debate.

Studies show that this biannual time-warp wreaks havoc on sleep patterns ... of our circadian rhythms—the body's internal ...

The saying goes that time is money but in the European Union, time is political too. When clocks spring forward across the bloc on Sunday, it will not be the last time despite a desire by millions of ...