There is a lake near a forest in Sweden. The water in lake is very clear and everything is quiet and still. On the far side of the water is some farmlands and further away, across the fields, is an old church built on a hill. It has just stopped raining. The brook flowing into the lake is full and there is still some half-melted snow from last winter on the ground.

    The reason the water is so clear and everything is so quiet and still, is that most of the plant and animal life in and around the lake is died. There are no birds because all the fish and insects, which the birds need for food, have disappeared. Many trees in the forest are losing their leaves and bark, and are sick and dying. Others were blown down by the high winds of last winter. A farmer is working in a field planting something, but unless he plants a stronger kind of seed this year, the crop will be between 25 to 40 percent lower than a few years ago. The stones of the old church tower are turning to power and unless the tower is repaired soon, it will fall down.

    The smoke coming out of factories and poisonous gases from cars and trucks causes all the death and destruction in this place. And yet this silent lake is hundreds of kilometers away from the nearest factory and highways.

    Women in northern European nations are closest to equality with men on wages, education, health and education. That is the finding of a report by the World Economic Forum. The United States ranked 28th. On Friday, President Barack Obama announced the government will require large businesses to report how much they pay men and women. The data will be used to target companies that pay women less to do the same jobs.

    According to the World Economic Forum report, women worldwide continue to lag behind men on wages. Based on current trends, they will need 126 years to catch up, according to the report. Women are making progress. But they still only earn what men did 10 years ago, say the report's authors. The report measures the gender gap for women in 145 nations for health, education, economic opportunity, and political power. Women have not achieved equality in any of the 145 nations included in the survey, says the report.

    Women came closest to equality in four Northern European nations – Iceland, Norway, Finland and Sweden. Ireland ranks No. 5. At the bottom of the women's gender ratings are Yemen, Pakistan, Syria, Chad, Iran and Jordan.

    More women than men are attending colleges in 97 nations. But women make up a majority of skilled workers in only 68 nations. Women control the majority of government and political positions in only four.

    At last week's World Economic Forum in Davos, Switzerland, Sheryl Sandberg, chief operating officer at Facebook, spoke about gender equality. “The reason to work towards equality – whether woman or man – is that it is better for you,” Sandberg said. “We should be doing this not because it's the right thing, but because it's the smart thing. Do it because it will help you.” The World Economic Forum completed its worldwide 2015 gender gap survey in November.

    In the famous fairy tale, Snow White eats the Queen's apple and falls victim to a curse(诅咒);in Shakespeare's novel, Romeo drinks the poison and dies; some ancient Chinese emperors took pellets(药丸)that contained mercury(水银), believing that it would make them immortal, but they died afterward.

    Poison(毒药) has long been an important ingredient in literature and history, and it seems to always be associated with evil, danger and death. But how much do you really know about poison?

    An exhibition, The Power of Poison, opened last month at the American Museum of Natural History in New York, intended to give the audience a more vivid understanding of poison.

    The museum tour starts in a rainforest setting, where you can see live examples of some of the most poisonous animals: caterpillars(毛毛虫), frogs and spiders. Golden poison frogs, for instance, aren't much bigger than a coin, but their skin is covered with a poison that can cut off the signaling power of your nerves, and a single frog has enough venom to kill 10 grown humans.

    "Poisons can be bad for some things," Michael Novacek, senior vice president of the museum, told NBC News. "Yet they can also be good for others."

    A poisonous chemical found in the yew tree is effective against cancer, which is what led to the invention of a cancer-fighting drug called Taxol.

    The benefits from natural poisons are not limited to just medicine. Believe it or not, many substances(物质)that we regularly ingest(摄入)-chili, coffee and chocolate-owe their special flavors or stimulating(提神的)effects to chemicals that plants make to poison insects.

    Important facts about ELIQUIS® (apixaban)

    This is a summary of important information that you need to know about ELIQUIS. Keep this document in a safe place, so you can refer to it before and during your treatment.

    Look out for the following signs as you read:

Do not stop taking ELIQUIS without talking to the doctor who prescribed (开处方) it to you.

    Talk to your healthcare team before any medical procedures. ELIQUIS may need to be stopped before surgery, or a medical or dental procedure. Your doctor will tell you when you should stop taking ELIQUIS and when you may start taking it again. If you have to stop taking ELIQUIS, your doctor may prescribe another medicine to help prevent a blood clot from forming.

    What is the possible serious side effect of ELIQUIS?

    ELIQUIS can cause bleeding, which can be serious, and rarely may lead to death. This is because ELIQUIS is a blood thinner medicine that reduces blood clotting. While taking ELIQUIS, you may hurt more easily and it may take longer than usual for any bleeding to stop.

    Call your doctor or get medical help right away if you have any symptoms of bleeding when taking ELIQUIS.

    Who should not take ELIQUIS?

    ELIQUIS is not for patients who:

    Have artificial heart valves (瓣膜). Currently have certain types of abnormal bleeding. Have had a serious allergic (过敏的) reaction to ELIQUIS.

    What should I discuss with my healthcare team before starting ELIQUIS?

    Talk to your healthcare team about the following:

    Liver problems any other medical conditions if you have ever had bleeding problems.

    Tell your doctor if you are pregnant or breastfeeding, or planning to become pregnant or breastfeed. You and your doctor should decide whether you will take ELIQUIS or breastfeed. You should not do both.

    Tell your healthcare team about all of the medicines you are taking.

A school district in Michigan has banned all backpacks from school buildings, in response to growing safety concerns. 

Flint Community Schools announced last week that backpacks would be banned and the ban would be in place for the rest of the school year. The new policy went into effect on Monday. 

"We are doing all that we can to create a safe and secure environment for our scholars, families, teachers and staff," Superintendent (主管) Kevin Jones wrote in a letter posted on the school district's website. 

Jones cited growing threatening behavior happenings across the country, including weapons being brought to schools, as the reason for the backpack ban. 

"Backpacks make it easier for students to hide weapons, which can be taken apart and harder to identify than hidden in pockets, inside books, or under other items," he said. 

Following the shooting at Robb Elementary School in Uvalde, Texas, last May, where 19 students and two teachers died, schools began taking policies requiring students to use clear backpacks. However, Flint Community Schools have gone a step further and banned clear backpacks from school buildings, with the superintendent saying that it doesn't resolve the issue. 

"By banning backpacks altogether and adding an increased security presence across the district, we can better control what is being brought into our buildings," Jones said. 

Students are allowed to store personal items like wallets, keys, hygiene products (卫生用品) and phones in small purses, bring lunchboxes or place their gym clothes in clear plastic bags, all of which will be subject to searches. 

If a student brings a backpack to school, parents or guardians must pick it up from the school, according to Jones. 

The Flint Board of Education, the district's administration and headmasters approved the policy change, Jones said, adding that the district received support from the Flint Police Department. 

Growing up in a suburban neighborhood in the Northeastern United States, the advent of springtime didn't hold much significance for me. While it did bring a week-long respite from school, the focus was more on the vacation aspect than the season itself.

For the children in my community, spring was largely an overlooked period. The year was divided into two primary seasons: winter, which offered the thrill of ice skating, sledding, and constructing snow forts; and summer, which allowed us to fully enjoy the beach located a short distance from my home. Spring and autumn were merely transitional periods, marking the countdown to the more exciting seasons.

It's true that as I matured, spring began to hold a certain charm for me, as suggested by the poetic line, "In the spring a young man's fancy lightly turns to thoughts of love," penned by Alfred Lord Tennyson. However, my fascination was more with the romantic notions associated with the season rather than the season itself.

In essence, spring was not a season I paid much heed to... until my journey to China. After spending roughly three months in Beijing, my first Spring Festival made its presence known in an undeniable way. The sporadic fireworks throughout the day and night were a clear indication, but what truly struck me was the apparent absence of the usual hustle and bustle in the city.

The usual throngs of people, streams of vehicles, and the general city noise seemed to have vanished. This mystery was resolved upon my return to work. My colleagues enlightened me that it is customary for Chinese people to travel, if necessary, to reunite with their families during the Spring Festival. Many residents of Beijing are not originally from the capital.

Furthermore, I was introduced to a fascinating aspect of the Spring Festival that continues to astonish me. Regardless of when the holiday commences, there is an almost instantaneous and perceptible improvement in the weather. Spring truly makes its entrance.

The ancient Chinese ability to devise a system that could consistently and accurately herald the change of seasons, year after year, is beyond my comprehension. Yet, they managed to achieve this remarkable feat.