first, dst was put into effect to save energy. the department ofnergy found it makes u.s. households use 25% less power a day. but not everyone observes clocks changing. arizona and hawaii, they don't father or mother low tfollow th rules. >>> when time is changing, it can throw your stress levels into a tizzy. on the bright side, in the springtime, the u.s. law enforcement assistance administration says it lowers crime and traffic accidents. and lastly, over 70 countries observe some form of daylight savings time. bud, in 2005, kazakhstan follows the time change after 51% of the citizens said nah. so enjoy that extra hour of sleep on sunday. that's daylight savings time on the break down. best of all, happy birthday, brian. >> thank you very much. and thanks to my mom in cleveland. i just got your text. >>> i didn't get you a gift this year, but you are getting an extra hour of sleep. >> hey, thanks for watching the list. here's what we're already working on for monday. >> this holiday, you have one less thing to worry about. how much to tip everybody on your list. from y