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DON'T FORGET: Daylight Savings Time Ends Sunday

You'll get an extra hour of sleep Sunday morning, but does Daylight Savings Time save anything else?

Why do we fall back every year, only to spring ahead six months later?

Ben Franklin was only kidding when he suggested 227 years ago that towns should employ the use of church bells or cannon blasts, if necessary, to wake citizens at sunrise so they could take full advantage of sunlight – a thrifty alternative to pricy candle power.

More than two centuries later, the joke's still on us.

Daylight-saving time is no longer just an amusing idea; it's taken hold with a vengeance.

Twice a year we're forced to adjust our sleep habits, synchronizing our biological and digital clocks in order to squeeze more sunlight into our waking hours.

Meanwhile, sleep researchers insist we should be cutting back on our waking hours if we really want to live long and prosper.

So here we are, caught somewhere between popping sleep aids and chugging Red Bull, not sure how to feel about our collective changing of the clocks.

David Prerau, recognized as one of the country's leading experts on our human quest for saving time, has devoted much of his life to chronicling the history and science of DST.

He served as a consultant to the U.S. Congress back in 2005 when they enacted a law extending daylight saving time as an energy saving measure, and he also has been a consultant on DST to the United Kingdom Parliament. He holds a Ph.D. from M.I.T.

Although Franklin certainly gets a historical nod for his amusing social commentary about our waste of perfectly good sunlight, Prerau points to British early riser and golf fanatic William Willett as the godfather of daylight-saving time.

"He used to go for early-morning horseback rides and wondered why nobody else was up enjoying this beautiful time of day," Prerau said.

Willett detailed his time-wise idea in a pamphlet, "The Waste of Daylight," and spent years lobbying Parliament in vain to adopt daylight-saving time – he died in 1915 before that would happen, Prerau said.

Germany was right on time, however. Seeing merit in Willett's bright idea, they adopted it in 1916 to conserve energy and resources during World War I. That launched a daylight-saving domino effect in countries around Europe.

Britain was finally shamed into adopting the policy three weeks after Germany.

Not to be left in the dark by our European counterparts, the U.S. officially adopted daylight-saving time for the first time during WWI, and again during World War II.

But it was not without controversy, even then.

By the end of WWI, city dwellers learned to love daylight saving, Prerau said. But country folk, still in tune with nature's clock, became disgruntled once they realized they'd actually have to rise before the sun if they were to get their goods on outbound trains that, under daylight saving, left town an hour earlier.

"Rural people bombarded Congress with requests to repeal daylight saving time," Prerau said.

Among them, New Hampshire Gov. John H. Bartlett, who in April of 1920 went right to the top, urging President Woodrow Wilson by telegram to inform senators and congressmen "that New Hampshire demanded prompt action to remedy the injustice being done the rural communities through changes in railroad schedules to conform to daylight saving hours."

Bartlett didn't know Wilson was a big fan of daylight saving.

When Congress voted to repeal daylight-saving legislation, Wilson vetoed it. And when Congress voted a second time to repeal it, Wilson vetoed, again.

"It was an interesting time in history," Prerau said. "Because then Congress voted to override Wilson's veto – that's how contentious it was," Prerau said. "If you look back in history, not many things are passed by overriding a presidential veto."

In his 2005 book, "Seize the Daylight," Prerau includes all kinds of historical anecdotes about the chaos that ensued over the random nature of daylight saving until federal legislation finally standardized it in 1966.

One of his favorites is the one about the bus ride that spanned 35 miles and seven time zones between Ohio and West Virginia.

"It became nationally famous as a sort of curiosity. People rode the bus just to change their watches seven times," he said.

Prerau believes the upside of daylight-saving time isn't economic; it's the lifestyle benefit. People have more time to mingle and recreate.

"People don't like driving in the dark, and daylight savings reduces traffic accidents. Crime is reduced also, because of that extra hour of daylight," he said.

Savings in electrical energy is only about 1 percent, said Prerau. "Which may sound low, but if you think of it as something you get for free, it's a good side benefit."

The Energy Policy Act of 2005 went into effect as of 2007, extending Daylight Savings in the U.S. by three-to-four weeks in the spring and one week in the fall. Since then, more studies are in the works to see if increased use of air conditioning may actually negate whatever savings were originally calculated, Prerau said.

"There's going to be more studies, and if they end up being negative, Congress may want to reconsider," Prerau said.

"But I doubt it. There's the other problem, of having to reprogram computers and clocks. It was a big deal for companies last March. And having gone through that once, people may be reluctant to change back," Prerau said.

Time will tell.

A 2008 study examined billing data in Indiana before and after it adopted DST in 2006, and concluded that DST increased overall residential electricity consumption by 1 to 4 percent, due mostly to extra afternoon cooling and extra morning heating; the main increases came in the fall. The overall annual cost of DST to Indiana households was estimated to be $9 million, with an additional $1.7–5.5 million for social costs due to increased pollution.

Increased energy consumption seems to depend on the region. In New England and other northern states, going to bed an hour later in the winter means increased use of lights and heat, but it may not be as significant in Southern states.

Either way, looks like daylight-saving time is here to stay. Prerau, for one, isn't losing sleep over it except, perhaps, on March 11, 2012.

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