Washington, November 2 : A study conducted by British researchers suggests that office workers can be helped in staying more alert and less sleepy during the day by changing traditional white-light lighting to blue-enriched white light.

Researchers from the Surrey Sleep Centre at the University of Surrey, who partnered with Philips Lighting for the study, said that this approach can lead to significant improvements in subjective measures of positive moods, work performance, fatigue in the evening, irritability, ability to concentrate and focus and eye strain.

The workers exposed to blue-enriched white light during the study also reported improved sleep at night, the researchers say.

The latest Obama vs McCain Florida Polls show that Barack Obama has slim edge over John McCain — Obama holds slim lead over McCain.

Florida went with Republicans in 2000 and 2004, but the latest FL polls show Obama having thin lead over McCain. Let’s check out what McCain vs Obama Florida polls show.

Mason-Dixon’s Obama vs McCain FL poll, conducted from October 29 to October 30, shows Obama leading McCain by 2 % points — 49 % to 47 % among the likely voters of Florida.

Datamar Inc.’s Obama vs McCain FL poll, conducted from October 29 to October 30, shows Obama and McCain statistically tied — 46.7 % to 46.7 % among the likely voters of Florida.

Washington, November 2 : Studying what happens if drivers combine extended driving and sleep deprivation, a team of researchers has shown that fatigue connected to the duration of driving very significantly increases the risk of accidents at night.

Experts from CNRS, Inrets, the University of Bordeaux and the University of Stockholm say that their study was able to determine whether 2, 4 and 8 hours of nocturnal driving affected driving performance differently.

Bratislava - More than 50 people were injured in nationalistic-fuelled violence at a football game in south-western Slovakia.

Thirty-one people were arrested in Saturday's rioting - 18 fans for the home team in Dunajska Streda, one of the most important centres for Slovakia's ethnic Hungarian minority, and 13 from the away team from Bratislava, a police spokeswoman in Bratislava said.

Violence had been feared ahead of the championship game between AC Dunajska Streda and Slovan Bratislava as hundreds of football hooligans and neo-Nazis from Hungary were expected to travel to the match.

Washington - The campaign of Democratic presidential candidate Barack Obama has said he wasn't aware that his Kenyan aunt was reportedly living in the US illegally, the Washington Post reported Sunday.

The news about Zeituni Onyango, who is referred to as aunty Zeituni in Obama's memoir, surfaced just as the presidential candidates start counting down hours, not days, to Tuesday's election.

Some Democrats have alluded to the fact that the timing of the disclosure seems politically motivated, as it was apparently leaked to a media outlet by a government official. Obama's Republican rival John McCain did not raise the issue on the campaign trail Saturday.

Obama vs McCain Pew Poll, conducted from October 23 to October 26, shows Obama leading McCain by 16 % points — 52 % to 36 % among the registered voters nationally.

Rasmussen Daily Tracking poll, conducted from October 25 to October 27, shows Obama leading McCain by 5 % points — 51 % to 46 % among the likely voters nationally.

Reuters/CSPAN/Zogby’s Obama vs McCain poll, conducted from October 25 to October 27, shows Obama leading McCain by 4 % points — 49 % to 45 % among the likely voters nationally.

Investors Business Daily/TIPP poll, conducted from October 24 to October 28, shows Obama leading McCain by 3 % points — 47 % to 44 % among the likely voters nationally.