People from all over the world visit Disneyland to have fun, not to get sick. But last week， an outbreak of measles（麻疹）spread from the Southern California theme park. As of Monday, January 19, at least 52 people have got the easily spread illness.

    The majority of the reported cases of measles are from people who visited the park before. According to the California Department of Public Health, these people were exposed to the illness at Disneyland from December 17-20.

    Officials believe the cause is likely someone who caught measles abroad and visited Disneyland, but this has yet to be proved. However, in 2014, California had its highest measles infection rate in nearly twenty years. There were 66 cases of measles reported in the state―23 of them in Orange County, where Disneyland is located.

    Measles spreads very easily. It can be caught from coughing and sneezing. Crowded areas like theme parks are especially suitable for its spread.

    The illness starts with a fever and develops into symptoms including a cough， runny nose, red eyes and so on. About three out of ten people infected with measles will develop another health problem, including an ear infection or pneumonia(肺炎).

    The best way to guard against measles is to get vaccinated(打疫苗). An unvaccinated person is 35 times more likely to catch measles than someone who received a vaccination.

The Brown Bear

    My wife Laura and I were on the beach, with three of our children, taking pictures of shore birds near our home in Alaska when we spotted a bear. The bear was thin and small, moving aimlessly.

Just a few minutes later, I heard my daughter shouting, “Dad! The bear is right behind us!” An aggressive bear will usually rush forward to frighten away its enemy but would suddenly stop at the last minute. This one was silent and its ears pinned back— the sign (迹象) of an animal that is going in for the kill. And it was a cold April day. The bear behaved abnormally, probably because of hunger.

    I held my camera tripod (三脚架) in both hands to form a barrier as the bear rushed into me. Its huge head was level with my chest and shoulders, and the tripod stuck across its mouth. It bit down and I found myself supporting its weight. I knew I would not be able to hold it for long.

    Even so, this was a fight I had to win: I was all that stood between the bear and my family, who would stand little chance of running faster than a brown bear.

    The bear hit at the camera, cutting it off the tripod. I raised my left arm to protect my face; the beast held tightly on the tripod and pressed it into my side. My arm could not move, and I sensed that my bones were going to break.

Drawing back my free hand, I struck the bear as hard as I could for five to six times. The bear opened its mouth and I grasped its fur, trying to push it away. I was actually wrestling (扭打) with the bear at this point. Then, as suddenly as it had begun, the fight ended. The bear moved back toward the forest, before returning for another attack—- The first time I felf panic.

    Apparently satisfied that we caused no further threat, the bear moved off, destroying a fence as it went. My arm was injured, but the outcome for us could hardly have been better. I'm proud that my family reminded clear-headed when panic could have led to a very different outcome.

C

    Modern fathers spend an average of six and a half hours a week playing with their children. A study said this equals 338 hours a year, or just over 14 days, three whole days more fun time than their own fathers spent with them.

    The report said modern parents are ''adventurous”, as many encourage their children to play outside. A third of parents also prefer family trips which encourage children to learn new skills, and most say that having fun together improves family ties. The study said the lack of time that today's parents shared with their own dads encouraged them to be more active with their children.

    Dr. Amanda Gummer, psychologist and founder of Fundamentally Children, a company which provides advice on child development, said being adventurous helps children. She said, “Being adventurous from an early age helps children develop important skills that will last throughout childhood and set them up for a healthy and successful adulthood.”

    Outdoor activities are a popular choice for dads and their children, with 40 percent choosing nature trails and 26 percent looking for wildlife, while 13 percent say their top outdoor activity is climbing trees. The simple things are the most popular, with 46 percent going to the park and 41 percent choosing to kick a ball around their children.

    Dr Gummer said, “Children are able to challenge themselves by being more adventurous, and they can be safe in the knowledge that their dad will be there to help if things start getting out of control. Parents can help encourage their children's adventurous, outdoor spirit with wildlife treasure hunts and adventure playgrounds. They can even do more exciting things, like going on camping trips.

    The printing press has a long history. It was invented in Germany by Joannes Gutenberg around 1440, and brought to England by William Caxton in the 1470s.Yet the basic technology of printing remained the same up to the end of the 18th century, requiring two men to operate a wooden screw press by hand, producing about 200 impressions an hour. The 19th century was the period in which this process was mechanised, automated, and made many times faster.

    A key moment in the development of mass newspapers was the development of the steam-powered printing press, adopted by the times in 1814. The new presses were able to print per hour around five times the number produced by the machines. The editor, John Walter, had the machines fixed secretly at night, so that when his printers reported for duty the next morning the majority of them found that they were out of work. The Times went from a circulation of 5,000 a day in 1815 to around 50,000 in the middle of the century. This was not caused by the steam press, but neither could it have happened without it.

    Later developments improved this effect: the Applegath machine achieved 5,000 impressions per hour, and the Hoe press, an import from the United States, reached to 20,000 impressions per hour. Increase in the speed of papermaking in this period brought down the cost of printed materials both for the producer and the customer. In 1896, the Daily Mail was sold at the cost of only half a penny, and by 1900 it was selling nearly 1,000,000 copies a day.

    If print production was completely changed in those years, then so was its distribution. The appearance of the steam railway meant that for the first time newspapers could be distributed across the country on a daily basis.

    In 2016, designer Liz Ciokajlo received a task from the Museum of Modern Art (Moma) in New York: revisit the Moon Boot, a fluffy-looking snowshoe inspired by the footwear used by the Apollo astronauts.

    Launched in 1972 at the height of the lunar missions, the Moon Boot is an icon of the 20th Century's “plastic age” and the museum administrators wanted a new take on it.

    Ciokajlo set out to reimagine it. She knew only a biomaterial would work in a “post-plastic age”, but the designer also wanted a new destination to inspire it. Our generation's space travel obsession is not the Moon, she thought, but the red planet Mars. And Mars allows you to really think outside of the box.

    The task led her to an amazing biomaterial that had already attracted the attention of engineers innovating m building materials and of top space agencies like NASA and ESA. Her final design, a tall, female, rough-looking boot, can be made on board a spaceship with almost only human sweat and a few fungus spores (真菌孢子), ideal for a seven-month trip to Mars with limited check-in luggage.

    This magic biomaterial is mycelium (菌丝体), the vegetative part of the fungus It looks like amass of white thread-like structures, each called hyphae. Collectively, these threads are called mycelium and are the largest part of the fungus.

    Mycelium has amazing properties. It is a great recycler, as it feeds off a substrate to create more material, and has the potential of almost limitless growth in the right conditions. It can endure more pressure than conventional concrete without breaking. It is a known insulator and fire-retardant and could even provide radiation protection on space missions.

    On Earth it's currently used to create ceiling panels, leather, packaging materials and building materials, but in outer space it stands out for its architectural potential, says artist and engineer Maurizio Montalti, who has teamed up with Ciokajlo.

    For her revisited boot, Ciokajlo wanted to use the human body as the source for some of the building materials and decided to employ sweat. Reusing sweat is not entirely new in space exploration but a novelty approach for footwear. She thinks it might make astronauts feel closer to home during the long journey to Mars.

    The design is still hypothetical, because the real boot submitted for Moma and currently in display at the London Design Museum did use mycelium but not human sweat, as their deadline was too tight, but the science checks out.

    At the age of seven, while his friends were spending their allowances on things like candy and toys, Jose Adolfo Quisocola was busy saving money for basic purchases. To try to get his peers（同龄人） to do the same, the boy from Peru came up with the idea of an eco-bank, the Bartselana

    Student Bank, which allows kids of all ages to become financially independent while also helping the environment.

    Set up in 2012, the bank is the world's first bank for kids. To become a member, a kid has to bring in at least 5 kilograms of solid waste and set a savings goal. Once accepted, all bank “partners” are required to deposit at least one additional kilogram of recyclables on a monthly basis and observe other requirements, such as attending financial education and environmental management workshops.

    The waste accumulated is sold to local recycling companies, who, thanks to Jose's efforts, pay a higher-than-market rate for everything brought in by the bank members. The money received is placed in the personal account where they collect until the savings goal is reached. The account holder can then withdraw the money, or choose to leave it and continue to grow for a bigger target. “At the beginning, my teachers thought I was crazy or that a child could not undertake this type of project,” Jose recalls, “They did not understand that we are not the future of the country but its present. Luckily, I had the support of the school headmaster and an assistant in my class.”

    The boy's efforts paid off, and by 2013, the bank had over 200 members, who brought in one ton of recyclable waste. Today, the eco-bank, which now has the support of several local institutions, boasts ten educational centers. They are designed to teach the over 3,000 students, aged 10 to 18, to become financially independent, use their money wisely, and help the environment.

    Not surprisingly, Jose's efforts have earned him several national and international awards. On November 20, 2018, Jose won Children's Climate Prize, which comes with a medal and $5,500 in prize money and is given to a child or youth who has accomplished an extraordinary achievement for the climate or environment.