The concept of daylight saving time (DST) was originally designed to conserve energy by making better use of daylight during the longer days of summer. However, its effectiveness has come into ...

Try light therapy if you're fighting fatigue from the time change or struggling with seasonal depression. Here's how it works. Laura Leavitt is a personal finance and wellness writer for CNET.

Despite some recent efforts to end seasonal time changes, we will continue to spring forward in March and fall back in November for the foreseeable future. Efforts on the West Coast to end the ...

Seasonal changes in sunlight affect the circadian rhythms that regulate a person’s sense of time. Some people consider this to be their “internal biological clock,” and disruption to the ...

Those who start work earlier express more discomfort with the seasonal time change. This is the main conclusion of a study that the lecturers at the University of Santiago de Compostela (USC) and the ...