Most states across the US switched to Daylight Saving Time early Sunday morning. DST is touted as an energy-saving practice although its benefits continue to be debated. Proponents say that because most people sleep in the early morning hours, these hours of sunlight are “wasted” for them, whereas if they are shifted to the evening via DST they can then be “used,” reducing the necessity of artificial light. Opponents argue that actual energy savings are inconclusive, that DST can disrupt activities. Among those opposed are farmers whose regimen remains the same year around, and indoor entertainment businesses who see the public spending more time outdoors during the days of later sunlight. Meanwhile, national fire officials urge the public to take the opportunity of changing their clocks to changing the batteries in their smoke detectors, thus assuring they are always fresh and functional.