The hidden cost of permanent daylight saving time

An hour may seem trivial, but in Washington it has triggered a significant political debate. The US leader is advocating for the Sunshine Protection Act, which aims to implement daylight saving time throughout the year, thus ending the ritual of adjusting clocks twice a year.

Supporters of the move see an obvious benefit: no more fiddling with clocks, more daylight after work and, perhaps, more time for shopping, dining and recreation.

It is an appealing proposition, but also an incomplete one.