Daylight saving time: Why it began, where it exists and how it saved one Chicago man’s life

Twice a year, daylight saving time — notice no “s” at the end of saving — is a reminder to adjust our schedules. This change in the standard time is designed to conserve energy and make better use of daylight. That means at 2 a.m., clocks “fall back” an hour during autumn, and then “spring ahead” a...