disruptive to academic and athletic schedules," Owens said.

But they agreed to give it the old college try.

About 200 students in grades 9 through 12 filled out questionnaires on sleep habits both before and after the time change. The researchers also measured tardiness and visits to the school health center.

After the time change, students went to bed an average of 18 minutes later at night and slept an average of 45 minutes longer.

The proportion of students getting at least eight hours of sleep a night jumped from 16.4 percent to 54.7 percent, while those getting less than seven hours a night decreased by almost 80 percent.

Other parameters improved as well.

"Virtually everything we looked at -- ranging from the amount of sleep to self-reported sleepiness during the day, to moodWant to tour the Potomac and Anacostia rivers, but don’t own a boat? Google’s Street View tool now includes the view from a small boat traveling along the DC shore line.

To take the tour, just click the picture below. You can also go to the area in Google Maps and drag the orange stick figure onto the blue line that appears.

Memorial Bridge from the Captain John Smith Chesapeak National Historic Trail. Phot from Google Street View.

The tour starts north of Kingman Island near Kenilworth Park on the Anacostia River, stretches south and west around Hains Point, then heads north past Chain Bridge.

The project is part of the Conservation Fund’s Google Trekker project, which has created virtual tours of beautiful and historic American places.

In this particular instance, the project