Obama, Lady Gaga and Steve Jobs—what do they have in common? They are, of course, all Americans. And according to a survey by social networking site baidu. com, they all best illustrate(举例说明) the word “cool”.

    But just what does it mean to say someone is “cool”? Most would answer that it is something to do with being independent-minded and not following the crowd.

    Yale University art professor Robert Farris Thompson says that the term “cool” goes back to 15th century West African philosophy. “Cool” relates to ideas of grace under pressure.

    “In Africa, ” he writes, “coolness is a positive quality which combines calmness, silence, and life.”

    The modern idea of “cool” developed largely in the US in the period after World War II. “Post-war ‘cool' was in part an expression of war-weariness (厌战情绪), ... it went against the strict social rules of the time,” write sociologists Dick Pountain and David Robins in Cool Rules: Anatomy of an Attitude.

    But it was the American actor James Dean who became the symbol for “cool” in the hugely successful 1955 movie Rebel without a Cause. Dean plays a tough guy who disobeys his parents and the authorities. He always gets the girl, smokes cigarettes, wears a leather jacket and beats up bullies. In the movie, Dean showed what “cool” would mean to American young people for the next 60 years.

    Today the focus of “cool” has changed to athletics (体育运动) stars. Often in movies about schools, students gain popularity on the athletics field more than in the classroom. This can be seen quite clearly in movies like Varsity Blues and John Tucker Must Die.

    But many teenagers also think being smart is cool. Chess and other thinking games have been becoming more popular in schools.

    “Call it the Harry Potterization of America—a time when being smart is the new cool,” writes journalist Joe Sunnen.

    Years ago, when I started looking for my first job, wise advisers urged, "Barbara, be enthusiastic! Enthusiasm will take you further than any amount of experience."

    How right they were. Enthusiastic people can turn a boring drive into an adventure, extra work into opportunity and strangers into friends.

    ''Nothing great was ever achieved without enthusiasm, wrote Ralph Waldo Emerson. It is the paste that helps you hang in there when the going gets tough. It is the inner voice that whispers, I can do it! " when others shout, "No, you can't."

    It took years and years for the early work of Barbara McClintock, a geneticist（遗传学家） who won the 1983 Nobel Prize in medicine, to be generally accepted． Yet she didn't let up on her experiments. Work was such a deep pleasure for her that she never thought of stopping.

    Author and poet Samuel Ullman once wrote, "Years wrinkle the skin, but to give up enthusiasm wrinkles the soul".

    Enthusiastic people also love what they do, regardless of money or title or power. If we cannot do what we love as a full-time career, we can treat it as a part-time interest, like the head of state who paints, the nun(修女) who runs marathons, the official who handcrafts（手工制作）furniture.

    We can't afford to waste tears on "might- have-beens". We need to turn the tears into sweat as we go after ''what-can-be".

    We need to live each moment wholeheartedly, with all our senses—finding pleasure in the fragrance of a back-yard garden, the crayoned（蜡笔的）picture of a six-year-old, the enchanting beauty of a rainbow. It is such enthusiastic love of life that puts a sparkle in our eyes, a lilt in our steps and smooths the wrinkles from our souls.

    Resorts of every kind have sprung up to cater to the Englishman need to spend a part of the year, however briefly, by the seaside. No town in Britain is more than eighty miles from the sea and there are seaside resorts all round the coast. On a summer Sunday most of the roads that lead to the sea axe congested (拥挤) with cars full of people eager to get a breath of sea air. In the evening when everyone is full of food, ice-cream and lollypops, there is the long slow drive home on roads crowded with returning cars.

    Brighton

    Brighton is one of the best-known south coast resorts and is very popular for day trip excursions. It is only fifty miles from London and can be reached by fast train in an hour. At the weekend the pebbled beaches are thronged with people sunbathing or picking their way to the water's edge for a dip.

    Bournemouth

    Located a hundred miles from London, the beaches are wide and sandy. White houses line the cliff tops and narrow valleys, densely wooded with pine trees, reach down to the shore. The area near to the town of Torquay on the Devon coast is sometimes called Britains Riviera and the climate is so mild that palm trees grow along the sea front.

    Blackpool

    On the north-west coast, a popular resort for the people in the industrial north, Blackpool is a gay, noisy town, famous for its amusement facilities and the magical lights. At night people travel from miles around to see the extravaganza of lights decorating the sea front.

    Southend

    On the east coast at the mouth of the Thames, Southend is, like Brighton, one of the favorite resorts of Londoners. The pier here is the longest in Britain and offers a great variety of differing entertainments.

    It's a white Christmas in the United States today, with snow falling from Seattle to Maine.

    •Northeast

    Biting winds with snow swept the Northeast.

    Earlier, up to 15 inches of snow fell during a snow storm in Maine, while up to one foot fell in New Hampshire. Winds reached 76 mph on Cape Cod, Massachusetts, while up to 61 mph winds tore through Long Island, New York. Falling snow collected on the runways at Boston's Logan International Airport, causing temporary flight delays.

    The wind was so severe in Pennsylvania and New Jersey that the annual (重演) of George Washington and his soldiers' crossing the Delaware River was canceled, the Washington Crossing Historic Park told ABC News.

    •Midwest

    Heavy lake effect snow fell in western Michigan.

    The National Weather Service has issued a wind-chill warning and advisory (公告) from Montana to Michigan. Bitter cold air in the Midwest produced wind chills Monday morning as low as minus 48 degrees in North Dakota and minus 47 in northern Minnesota.

    As this bitter cold made its way east overnight, it was expected to move over relatively mild Great Lakes, producing intense lake-effect snow bands capabie of producing 2 to 4 inches of snow in an hour.

    •West Coast

    That storm system moved overnight through the Rockies, bringing more snow and the threat of avalanches (雪崩). The National Weather Service has issued an avalanche warning for the Wasatch Range Mountains outside Salt Lake City.

This year, the Music Educator Award, presented by the Recording Academy and Grammy Museum, went to Annie Ray, the performing arts department chair and orchestra director at Annandale High School in Fairfax County, Virginia. She attended the awards ceremony in Los Angeles and brought home both a $10,000 prize and matching grant （资助） for her school's music program.

Ray created the Crescendo Orchestra for students with severe intellectual and developmental disabilities, as well as a parent orchestra that teaches nearly 200 caregivers a year to play the same instrument as their children. She got the idea mostly from the Annandale community, which she says represents over 60 countries, including many refugees and immigrants. "There're many cultures that might typically clash, but they come together in this very beautiful harmony," Ray explained. "And that's really uniquely expressed in the orchestra classroom, where we're just all music-ing together."

Ray says the Crescendo Orchestra is focused on teaching students how to play an instrument, through one-on-one instruction tailored to their needs. The orchestra is about much more than just making music, however. "I really push my students to be brave and go outside of their comfort zone. We have to learn how to work together with others," she says.

Ray, who comes from a family of musicians and has played the harp （竖琴） since the age of five, knows firsthand the impact that a great teacher can make on their students. "Why I am where I am is because a teacher changed my life and made me want to be a music educator," she says.

Ray says her warm reception on the awards ceremony is especially meaningful because not many people understand what exactly music educators do in the classroom or how much their work matters. She says that lack of understanding is one of the biggest challenges facing the profession in general. Moreover, she says her school desperately needs new instruments, and adds that she'll use some of her grant money to buy more.

The Ebola virus is an infectious disease that for years had almost no treatments, and it kill s about half the people it infects. Now a new study published in The Lancet Infectious Diseases shows that a promising vaccine （疫苗）, named rVSV△G-ZEBOV-GP, doesn't just help to reduce infections, it also can cut those death numbers in half.

The vaccine is a single-dose （单剂） muscular one that causes cells to produce one of the virus's proteins. "Later, if the person is exposed to Ebola,"explains Rebecca Coulborn, a scientist with Epicentre, the medical research arm of Doctors Without Borders, "their immune system will recognize the viral protein. This recognition allows the immune system to be prepared to attack the virus and protect the person from Ebola virus disease."

Researchers showed rVSV△G-ZEBOV-GP was effective at reducing the risk of infection, but no one knew how capable it was of preventing death in someone who was vaccinated after becoming infected during an epidemic （流行病）. To figure it out, Coulborn and her colleagues focused their efforts on the second-largest Ebola outbreak ever recorded, which occurred in the Democratic Republic of Congo between 2018 and 2020.

"Every single Ebola health facility across the entire Ebola epidemic had a standardized list of all admissions," says Coulborn. This list included 2,279 confirmed Ebola patients, and it recorded whether or not each person had been vaccinated before they got sick—and if so, when they'd received the vaccine.

Coulborn found the death rate was 56% among the unvaccinated. But for those who'd received the vaccine, that rate was cut in half. This was true no matter when someone got vaccinated before the appearance of symptoms. Additionally, those who'd been vaccinated had less virus circulating in their bodies than those who hadn't. So the vaccine played an important role.

Rebecca Coulborn says she feels buoyed by the results—since they offer clear evidence that people who're at risk of contracting Ebola should be vaccinated early. It's an opportunity to cut chains of transmission （传播） and prevent an outbreak before it gains speed.