Almost one in five drivers had dozed off behind the wheel, a shocking news report had showed. Of those who were dozing off, 29% have done so with their cars speeding at 70 miles per hour. The report also found a quarter of men have fallen asleep while driving, making it almost twice as many as women.

    The Safety on Wheel Report, by Post Office Insurance, also looked at how often tiredness or a lack of concentration caused accidents. Three in ten drivers have experienced an accident, from passing a walker crossing to hitting another vehicle, because of a lack of concentration. Meanwhile, almost half (49%) of UK drivers have driven when they do not concentrate.

    Paul Haven hand, head of insurance at Post Office, said, “ When tiredness strikes, drivers should avoid the roads.” There is no measurement for tired driving, unlike driving under the influence of alcohol, yet it could result in an equally dangerous accident.

    Drivers are advised to take a 15-minute break from driving every two hours. However, a third (36%) are so eager to reach their destination that they will ignore feelings of tiredness. What's more, almost one in five (18%) will drive for longer than four hours without a break, while 6% carry on for up to 6 hours. Just over a quarter (27%) choose a quick stop to buy a cup of coffee, which is a very popular way for drivers to get rid of tiredness, and only 17% stop to have a rest until they feel energetic again. Mr. Havenhand added, “Drivers should plan ahead and rest before starting a long journey; besides, they can take regular breaks to recharge their batteries while on road; in some cases, if they do feel too tired to concentrate on the roads, they could consider an alternative means of transport.”

    Anew international study shows that some peopled biological clock plays a powerful role for their life expectancy, regardless of lifestyle choices.

Published in the latest issue of Aging on Wednesday, the study has found the most definitive evidence to explain why some people keep healthy lifestyle but die younger than others.

    Geneticist Steve Horvath from the University of California, Los Angeles (UCLA), led a team of 65 scientists around the world to record age-related changes to human DNA, analyse blood samples collected from 13,000 people and estimate their lifespan.

    A higher biological age, regardless of actual age, consistently predicts an earlier death, the study says.

    “You get people who are vegan, sleep 10 hours a day, have a low-stress job, and still end up dying young,” Horvath said in a statement. “We have shown some people have a faster innate aging rate.”

    The findings discovered that 5 percent of the population ages at a faster biological rate, which translated to a roughly 50 percent higher than average risk of death at any age.

    “The great hope is that we find anti-aging interventions that would slow your innate aging rate,” Horvath said, adding that “this is an important milestone to realizing this dream.

    Melissa Poe was 9 years old when she began a campaign for a cleaner environment by writing a letter to the then President Bush.Through her own efforts,her letter was reproduced（复制）on over 250 donated billboards（广告牌）across the country.

    The response to her request for help was so huge that Poe established Kids For A Cleaner Environment(Kids F.A.C.E.) in 1989. There are now 300,000 members of Kids FACE worldwide and is the world's largest youth environmental organization.

    Poe has also asked the National Park Service to carry out a "Children's Forest" project in every national park. In 1992, she was invited as one of only six children in the world to speak at the Earth Summit in Brazil as part of the Voices of the Future Program. In 1993, she was given a Caring Award for her efforts by the Caring Institute.

    Since the organization started, Kids F.A.C.E.members have distributed and planted over 1 million trees! Ongoing tree-planting projects include Kid's Yards—the creation of backyard wildlife habitats and now Kids F.A.C.E.is involved in the exciting Earth Odyssey, which is a great way to start helping.

    "Starting the club turned out to be a way to help people get involved with the environment. Club members started doing things like recycling, picking up litter and planting trees as well as inviting other kids to join their club."

    "We try to tell kids that it's not OK to be lazy," she explains. "You need to start being a responsible, environmentally friendly person now, right away, before you become a resource-sucking adult."

    Here are some recommendations for tourists to choose from.

    Banff, Canada

    Banff, located in the Rockies, has a view of tall mountains, deep valleys and lakes, making it the first town to become part of the country's national parks. Tourists can enjoy its beauty by hiking, horse riding and boat trips. Banff was founded in 1883 while a railroad was in construction. It was the water springs that drew the engineers' attention to the place as a settlement. With such a fantastic view, it's no surprise that Banff hosts a number of cultural festivals.

    Lisbon, Portugal

    Lisbon is the capital of Portugal, with the warmest winters of any major European city.

    Belem Tower and Jeronimos Monastery are listed as UNESCO World Heritage Sites. The former was built in the 16^th century as a symbol of Portugal's Extraordinary Age and the latter is one of the greatest examples of the Portuguese late-Gothic style of architecture. The Lisbon Oceanaium is among Europe's finest aquariums. The Museu Calouste Gulbenkian is among the best museums in Europe containing priceless artworks covering 4000 years from ancient Egyptian times to the late 20^th century.

    Portland, US

    Portland is frequently recognized as one of the world's most environmentally-friendly cities because of its well-built pavements, large community of cyclists and convenient public transportation. Its climate is ideal for growing roses and it's called the “City of Roses”. Besides, the seaport is also known as a city of beer: it has the largest number of beer breweries（啤酒厂）of any city in the world. Today's Portland is better known for its music. It's called “the capital of karaoke” and “one of the most exciting music scenes” in the US.

    Bordeaux, France

    Bordeaux attracts tourists with its rich cultural heritage, especially its wealth of architectural treasures. Besides the Cathedral of Saint Andrew dating back to 12^th century, the Basilica of Saint Michael is another one of the city's UNESCO World Heritage Sites. It took 200 years to build from 14^th to 16^th centuries. Other significant buildings include the Grand Theater built in 1780 in the new Classical style and the Stone Bridge built in 1821.

    Young people and older people do not always agree with each other. They sometimes have different ideas about living, working and playing. But in one special program in New York State, adults and teenagers live together in a friendly way.

    Each summer 200 teenagers and 50 adults live together for eight weeks as members of a special work group. Everyone works several hours each day. They do so not just to keep busy but to find meaning and enjoyment in work. Some teenagers work in the woods or on the farms near the village. Some learn to make things like tables and chairs and to build houses. The adults teach them these skills.

    There are several free hours each day. Weekends are free, too. During the free hours some of the teenagers learn photo-taking or painting. Others sit around and talk or sing. Each teenager chooses his own way to spend his free time.

    When people live together, rules are necessary. In this program, the teenagers and the adults make the rules together. If someone breaks a rule, the problem goes before the whole group. They talk about it and ask, “Why did it happen? What should we do about it?”

    One of the teenagers has this to say about the experience, “You stop thinking only about yourself. You learn how to think about the group.”

    When asked about her childhood in the documentary Alive Inside, a 90-year-old woman with dementia(痴呆) replies, "I've forgotten so much." Filmmaker Michael Rossato-Bennett then plays music from her past for her. “That's Louis Armstrong,” she says. “He's singing When the Saints Go Marching In and it takes me back to my school days.” She then recalls exact details from her life.

Why does it happen? Music tends to accompany events that arouse emotions or otherwise make strong impressions on us — such as weddings and graduations. These kinds of experiences form strong memories, and the music and memories likely become intertwined(紧密相连) in our neural(神经的) networks, according to Julene Johnson, a professor at the University of California. Movements, such as dancing, also often pair with our experience of music, which can help form memories. Even many years later, hearing the music can bring back memories of these long-past events.

    As Alive Inside shows, music has this power even for many people with dementia. Researchers note that the brain areas that process and remember music are typically less damaged by dementia than other areas, and they think it may explain the phenomenon.

    They also pay attention to elderly people with dementia, especially those in nursing homes. "It's possible those long-term memories are still there," Johnson says, “but people just have a harder time accessing them because they're in a strange place and there are not a lot of circumstances in which someone could pull out those memories.”

    Johnson also notes that music is not universally useful for all people with dementia since there are some people with dementia whose brain area that recognizes music is damaged.

    Despite music's apparent benefits, few studies have explored its influence on memory recall in people with dementia. “It's really an untapped area,” Johnson says. Petr Janata is one researcher investigating the topic of music and memory. He says that scientists still do not have the answers for why and how music reawakens memories in people with dementia, but this phenomenon is real and it's just a matter of time before it's fully borne out by scientific research.