Do you love holidays but hate the increase weight that follows? You are not alone.

    Holidays are happy days with pleasure and delicious foods. Many people, however, are worried about the weight that comes along with these delicious foods.

    With proper planning, though, it is possible to control your weight. The idea is to enjoy the holidays but not to eat too much. You don't have to turn away from the foods that you enjoy. The following suggestions may be of some help to you.

    Do not miss meals. Before you leave home for a feast(宴会),have a small, low-fat snack(小吃). This may help to keep you from getting too excited before delicious foods. Begin with clear soup and fruit or vegetables. A large glass of water before you eat may help you feel full. Use a small plate; a large plate will encourage you to have more than enough.

    Better not have high-fat foods. Dishes that look oily or creamy have much fat in them.

    Choose lean meat(瘦肉 ).Fill your plate with salad and green vegetables.

    If you have a sweet tooth, try mints (薄荷) and fruits. They don't have fat content as cream and chocolate. Don't let exercise take a break during the holidays. A 20-minute walk after a meal can help burn off excess(过多的) calories.

    8:30 P.M.

    Outlook

    Outlook is back with a new series of reports to keep you up date with all that's new in the world of entertainment. Stories go all the way from the technical to the romantic, from stage to screen. There will be reports of the stars of the moment, the stars of the future and the stars of the past. The director with his new film, the designer with the latest fashion, and the musician with the popular song are part of the new Outlook. The program is introduced by Fran Levine.

    9:00 P.M.

    Discovery

    When a 10-year-old boy gets a first class degree in mathematics or a 8-year-old plays chess like a future grade master, they are considered as geniuses. Where does the quality of genius come from? Is it all in the gene or can any child be turned into a genius? And if parents do have a child who might become a genius in the future, what should they do? In this 30-minute film, Barry Johnson, the professor at School of Medicine, New York University will help you discover the answer.

    10:00 P.M.

    Science/Health

Is it possible to beat high blood pressure without drugs? The answer is “yes”, according to the researchers at Johns Hopkins and three other medical centers. After a study of 800 persons with high blood pressure, the found that after 6 months, those devoted to weight loss — exercise and eating a low-salt, low-fat food — lost about 13 pounds and became fitter. Plus, 35% of them dropped into the “normal” category. This week, Dr. Alan Duckworth will tell you how these people reduce their blood pressure to level similar to what's achieved with Hypertension drugs.

    ARCHAEOLOGISTS (考古学家) GUIDED BY laser images of a remote region of northern Guatemala have discovered 20-foot-high walls, watchtowers, and other evidence that ancient Maya societies had been annoyed by warfare threat over many years. The finds have upended long-established impressions of a civilization that it tamed the jungle and built thriving cities, then declined and disappeared quietly beneath the dense tropical forest.

    Among the most surprising discoveries was a large stone complex now called La Cuemavilla. Built on a steep ridge, the heavily fortified site included high walls. Moats which serves as the largest defensive system ever discovered in the region.

    This was surprising says an archaeologist, because we had a tendency to romanticize Maya warfare as something that was largely ritualized. But the fortifications were seeing suggest an elevated level of antagonism over centuries. Rulers were so deeply alarmed that they felt the need to invest in all these hilltop fortifications. There is an almost visible sense of fear in this landscape.

    All these findings owe credit to PACUNAM LIDAR Initiative, a laser survey of some 800 square miles of the Maya Biosphere Reserve in northern Guatemala. Using revolutionary Laser technology, the survey revealed the long-hidden ruins of a sprawling pre-Columbian civilization that was far more complex and interconnected than most Maya specialists had supposed.

    Guided by the new Laser treasure maps, the LIDAR team deployed through the jungle over the past year to conduct hands-on investigations of more than a dozen of the most promising sites-most of which would have been imperceptible without LIDAR.

    "You could walk over the top of a major ruin and miss it, "says an archaeologist who's part of the PACUNA project. But LIDAR picks up the patterns and makes the features pop out with surprising clarity.

    Three-dimensional maps generated by the survey yielded surprises even at Tikal, the largest and most extensively explored archaeological site in Guatemala. The ancient city was at least four times bigger than previously thought, and surrounded by a massive ditch and fortified base stretching for miles.

    Archaeologists stress that LIDAR, for all its utility, will never see below the ground or yield direct dates of occupation. "We still need to dig and hack our way through the jungle, but now we have a very accurate map to guide us."

    Hobbies in general are becoming something of the past. Our lives are already filled with classes, homework, working, relationships and sleeping. When we do have a spare moment, it is all too easy to spend it on the endless entertainment and media that are right at our fingertips.

    I do not doubt that there are some people who could become a great writer or musician. I only fear that so many people are busy pursuing their education and their careers, but they never even see the potential (潜能) they have. The next great photographer or singer could be going to college right now. But they might not even know they have a gift for photographing or singing if they've never picked up a camera or a guitar.

    Of course, the final goal of pursuing a new hobby shouldn't be to become rich and famous. For most people, a hobby is just something they enjoy doing for the purpose of the thing itself. Such hobbies are still very useful. Studies have shown that people who have a hobby are less likely to have stress and more likely to have more meaningful lives.

    Most importantly, a hobby is just something you do to make you happy. I hate to break it to you, but we all have a long lifetime of work and stress ahead of us. It will make things much easier if we can practice the piano or make some collections after work.

    Sure, it's not easy to start a new hobby while going to school, but it will likely never get easier than it is right now. So think about the thing that you have always wanted to try but were too embarrassed or busy or whatever. You never know, you might become the world's next great people. If not, you'll at least be a little more well-rounded, more interesting and less stressed.

The giant Amazon rainforest in South America has been a mystery for centuries. It holds all kinds of natural wonders. Among them in Colombia, a river stands out as"the most beautiful river"in the world. 

Locally called Carni o Cristales, this special river lies in a national park. It is made up of several waterfalls, rapids, and plenty of pools. For most of the year, Canio Cristales looks like a common river: clean, green, and rocky. However, during the short period between September and November, the river explodes(迸发) with life and colour. It appears as any mix of colours including blue, green, yellow, orange, and a purplish red. So it is also known as the"River of Five Colours". 

Although at first it may appear as if some chemicals were added to the water, this rainbow river is completely natural. Cafio Cristales'colours are the result of a rare(稀有) water plant which needs sunlight to grow. The plants change col-our depending on how much sunlight they receive, and the amount is decided by the height and speed of the water. Therefore, it is possible for the plants to be totally colourless if the sunlight is too hard to get. They are a delicate plant. This makes them easily damaged in the water. 

Actually, the river faces some problems, including drier seasons, wildlife trouble, waste management, and budget(预算) cuts. In 2007, the park was forced to close because it was over-crowded with tourists. Now the park admits only 200 people a day and requires them to mind their behaviour. 

Today, Cano Cristales still shines among Colombia's most popular natural attractions, drawing thousands of tourists every year. 

Where does the meat on our table come from? It usually comes from livestock like chickens and cows. But did you know that meat can also be made in a lab? US company JUST has announced that lab-grown meat could be on some restaurant menus in the United States and Asia by the end of 2018, The Independent reported.

"These meats include chicken nuggets (鸡块), sausage and foie gras (鹅肝酱)," Josh Tetrick, CEO of JUST, told The Independent. Lab meat is sometimes referred to as "clean meat". It is made using the stem cells (干细胞) of living livestock. The cells need to be grown in a lab for a few weeks. For example, making a hamburger patty (肉饼) takes about nine weeks, CNN reported. This is faster than raising a cow, which usually takes over 20 weeks.

The first clean meat was a beef burger that was produced in 2013, but it was said to taste quite dry. How does clean meat taste now? Clean meat supporters told CNN that they think it tastes just like traditional meat.

Clean meat has other advantages. It is healthier than traditional meat. Meat producers can control what type of fat goes into the meat. They can produce clean meat that contains healthy fats, such as omega-3 fatty acids (脂肪酸). This kind of fat is good for people's hearts.

Clean meat can also help to solve global warming. According to The Washington Post, about 14.5 percent of the planet's greenhouse gas emissions (排放) come from raising livestock. That's more than the emissions from every car, train, ship and airplane in the world combined. It is predicted that switching to clean meat could lower greenhouse gas emissions by 96 percent, The Independent reported.