National

This weekend, most Americans will lose an hour of sleep last night as daylight saving time takes effect. Why do we fall back one hour in the autumn, and spring ahead one hour in the spring?

Educators have long cautioned students about posting damaging information online, but now it’s also becoming important to build a positive digital footprint. When should students start building their online persona? The earlier, the better.

Time capsules allow their creators to freeze moments in time and communicate those moments to future generations. They encourage a dialogue with history, and speak through the artifacts of culture. Take a look at some unique time capsules that await opening, and some that have already been unearthed.

On July 18, 1984, James Oliver Huberty entered a McDonald’s in San Ysidro, California and, with no apparent motive, embarked on a shooting spree that killed 21 people.

The low percentage of adults that receive their recommended vaccines worries doctors, and highlights the potentially grave dangers of preventable diseases.

The dwindling number of male teachers in elementary and middle schools is cause for concern. Boys and girls need male role models in the classroom, educators say.

When it comes to their teenagers’ dating habits, parents may think they have the answers, though it’s more likely they know little about the ways teens initiate and conduct intimate relationships.

On March 28, 1979, the Three Mile Island nuclear power plant experienced a partial meltdown. It was the worst-ever commercial nuclear accident in U.S. history.

Most Americans lost an hour of sleep last night as daylight saving time took effect. Why do we “fall” back one hour in the autumn, and “spring” ahead one hour in the spring?

A recent study has found that the Yellowstone caldera rose significantly between 2004 and 2010, sparking fears in the media that the simmering “supervolcano” beneath it will soon erupt. However, volcanic experts maintain that the chance of a disastrous eruption in the near future remains slim.

As more cases come to light of tarnished online reputations proving disastrous in the professional world, more people consider changing their names on Facebook.

Take a look at the origins of the endangered species list and learn what qualifies a species for inclusion on the list.

A Texas district court is hearing arguments that the state’s death penalty is unconstitutional on the basis that there is a high probability of wrongful executions. A dozen Texas men have been exonerated after spending time on death row, and two men have already been executed due in part to discredited evidence.

On Sunday, March 14, 2009, most of the United States set their clocks ahead one hour. Likewise, on Sunday, Nov. 7, most households will set their clocks back one hour. Why?

Many people are rediscovering the benefits of board games, while teachers are incorporating board games into lesson plans.

With Facebook supplanting grief counselors as an outlet for grieving teens, schools need to participate in the process.

As laid off workers struggle to find new jobs, volunteering has become an increasingly popular alternative, everywhere from Singapore to San Francisco.

While parents and teachers are concerned about teens using cigarettes, alcohol and drugs such as marijuana and LSD, inhalants are one of the most dangerous—and popular—drugs available.

Teenage girls are getting into more fatal crashes—and admit to riskier behavior behind the wheel—than teenage boys. Are teen girls simply acting more like the boys?

One man’s quest to explore Brooklyn’s abandoned subway tunnel sheds light on other hidden railways around the U.S., and reignites interest in President Lincoln’s assassination.

As energy experts tout the potential of algae as a fuel source, we look more closely at pond scum, the current state of biofuels and the innovative ways scientists are deriving fuel.

Several studies have tried to determine whether online media actually fosters creativity and improves writing skills.

The charter school movement is threatened by the failures of a few, but improvements could have implications for education across the United States, some officials contend.

An examination of the 178-year-old “Duffy’s Cut” grave indicates that violence contributed to the deaths of the 57 Irish immigrant railroad workers inside.

JiJi, an animated computer penguin, is helping elementary school children improve their math scores, showing how technology can play a positive role in education.

Classrooms around the country are being updated to become technological havens for students, but some wonder whether technology is a real necessity for education.

Utah's elementary school language immersion programs could encourage students to live abroad, an experience that studies suggest improves creative problem-solving abilities.

With lots of travel during fourth of july weekend, physicians are spreading the word about the importance of sunscreen and sun safety practices.

Tanning beds join cigarettes and hepatitis B as definitive causes of cancer. But the threat of melanoma might not be enough to stop young people from tanning.

Cities in the United States that are unfriendly toward pedestrians may also contribute to rising obesity rates, as driving takes the place of walking for work commutes and errands.