Grey clouds move as low as smoke over the treetops at Lolo Pass. The ground is white. The day is June 10.It has been snowing for the past four days in the Bitterroot Mountains.Wayne Fairchild is getting worried about our trek over the Lolo Trail-95 miles from Lolo Montana to Weippe in Idaho, across the roughest country in the West. Lewis and Clark were nearly defeated 200 years ago by snowstorms on the Lolo.Today Fairchild is nervously checking the weather reports.He has agreed to take me across the toughest,middle section of the trail.

    When Lewis climbed on top of Lemhi Pass,140 miles south of Missoula,on Aug.12,1805,he was astonished by what was in front of him;“high mountain chains still to the West of us with their tops partially covered with snow.”Nobody in what was then the US knew the Rocky Mountains existed,with peaks twice as high as anything in the Appalachians back East.

    Today their pathway through those mountains holds more attraction than any other ground over which they traveled,for its raw wilderness is an evidence to the character of two cultures:the explorers who braved its hardships and the Native Americans who prize and conserve the path as a sacred (神圣的)gift. It remains today the same condition as when Lewis and Clark walked it.

    The Lolo is passable only from July to mid-September.Our luck is holding with the weather,although the snow keeps getting deeper.As we climb to Indian Post Office,the highest point on the trail at 7,033 ft,we have covered 13 miles in soft snow,and we hardly have enough energy to make dinner.After a meal of chicken,I sit on a rock on top of the ridge (山脊）.There is no light visible in any direction,not even another campfire.For four days we do not see another human being.We are occupied with the things that mix fear with joy.In our imagination we have finally caught up with Lewis and Clark.

    The increasing environmental problems and need for eco-friendly products and services are creating a new job section of green-collar jobs. {#blank#}1{#/blank#}. It is expected that by 2025 about 25% of the jobs in developed countries will be of green-collar jobs. Doesn't the data look promising for the future?

    {#blank#}2{#/blank#}. And jobs will pop up at every income level, from environmental manager to gardener. For example, many countries including the United States have understood that fossil fuels have negative effect on the environment which can later become a serious danger to mankind. {#blank#}3{#/blank#} The increasing demand of newer resources has created the need for experts and researchers who can find better ways to deal with the ongoing needs. In addition, in order to meet the increasing demands of environment-friendly equipment, both green product designer and educated and trained workers are needed. Management of environmental organizations also demands a large number of environmental managers. {#blank#}4{#/blank#} Internet is undoubtedly the best way to find information on almost any matter. Nowadays, different kinds of jobs are being posted online. Search through a couple of job websites to look for a bright future in energy conversion and recycling of waste management. Check regularly and find the right work for yourself. {#blank#}5{#/blank#}

A. People who read newspapers can also find different kinds of green-collar jobs.

B. People who take green careers will be well paid.

C. Where can you find green-collar jobs?

D. Green-collar jobs have become a bright career chances for all.

E. Many countries of the world have realized the importance and need for energy-saving products and services.

F. As a result, possibilities are being explored to find alternatives to satisfy demands in a better way.

G. Forget the blue–collar and white–collar categories.

    It warmed my heart today to walk into the Thirsty Camel downtown in the Thanksgiving Day, for a quick lunch before a haircut and library trip. Ilan, a food shop owner, said that he was refusing to take money today because it was Buy Nothing Day. To increase awareness(意识) of the stranger's over-spending nature of our society, Ilan suggested a trade for food today. He simply asked that you offer something of equal personal value for the meal you received.

    At first I was really uncomfortable, wondering if it would be fair to exchange a yet to be determined “I Owe You” (IOU) for food? What could I give him of equal value? After all, his food is the best in the town!

    We ended up writing our IOU's with promises of a book, some paintings and the offer of work in a variety of ways if he needs it.

    I think the idea isn't that the trade is “equal” so much as the importance of the kind of transaction. We put thought into our offer and we had an even greater understanding for the meals we ate.

    We don't buy a lot, especially at this upcoming time of year. We don't give gifts at all in fact. The holiday time is spent enjoying each other's company and doing things together with family and friends. This is what seems most sensible.

    Ilan is a good person. We are all lucky to have someone like this in our community.

    These are instructions for making invisible ink using baking soda.

    In China, Major Cold (大寒) is the last solar term in winter and also the last solar term in the annual lunar(阴历的) calendar. In this period, snow, rain and icy cold weather have a big influence on people's lives.

    Here are several things you should know about Major Cold.

    Eating "dispelling cold cake" (吃"消寒糕")

    During Major Cold, people in Beijing have a habit of eating "dispelling cold cake", a kind of rice cake. Sticky rice, the cake's main ingredient, contains more sugar than rice, which can make people feel warm all over their bodies. In Chinese the word "rice cake" has the same pronunciation with the word "higher in a new year", which symbolizes good luck and continual promotion.

    Eating fried spring roll（吃春卷）

    In Anqing of Anhui province, people traditionally eat fried spring rolls during Major

    Cold. They use a round, cooked, thin pancake to wrap stuffing（馅料）in a thin roll. Then it is fried in a pan with oil until it turns yellow and floats to the top. The stuffing inside the spring roll contains meat or vegetables and the flavor can be salty or sweet.

    Drinking stewed soup

    People in Nanjing of Jiangsu province like to drink stewed soup during Major Cold, which can make people feel warm from head to foot. They always stew the aged hen soup with ginseng(人参), matrimony vine(枸杞) and black fungus(黑木耳).

    Doing winter sports

    There is a saying that goes, "Dripping water freezes during Minor and Major Cold." In various regions of China, Major Cold is the perfect time for winter sports such as skiing, ice skating and sledding.

    High school biology teacher Kelly Chavis knew smart phones were a problem in her class. But not even the students realized how much of a problem the devices were until Chavis did an in­class experiment.

    For one class period, students used a whiteboard to count every Snapchat, Instagram, text, call that appeared on their phones. Chavis is among a growing number of teachers, parents and health experts who believe that smart phones are now partly to blame for increasing the levels of student anxiety. "One girl, just during the one hour, got close to 150 Snapchat notifications. 150!" she said.

    Jean Twenge, a psychology professor at San Diego State University in California, said it is not a coincidence that youth mental health issues have risen with the number of phones. "This use of phones has led to a loss of sleep and face­to­face interactions necessary for their growth," she said.

    Researchers are still not sure whether phones cause student depression or depression causes phone use. But nearly 60 percent of parents said they worry about the influence of social media on their child's physical and mental health.

    Both schools and parents are starting to take steps to deal with the problem. Many public schools pay outside companies to watch students' social media activity for signs of anxiety. Other schools invite in yoga teachers and comfort dogs to help calm students.