Sidewalks in Chicago were packed during the rush hour. I marched along as quickly as I could. If I didn't get to the station fast I would miss the early train out of the city. That meant even less time to spend at home with my baby.

    On my left was Saint Peter's Church. I'd passed it on the way to the station many times, but today I stopped. Other commuters (使用月票乘车者) rushed around me. I knew I should follow them since my train wouldn't wait. But I had the strangest compulsion to go into the church instead. I hesitated for a moment, but the feeling was strong. I went inside.

    I sat down in a comer. It seemed like ages since I'd sat down to think. Mary Ellen had been born in October, on the very date of her due date, in fact, October 16. A month before my husband, Rick, had lost his job. I often worked as a designer, but I'd planned on taking time off after the baby was born. With Rick out of work, I didn't have the choice. One of us had to find a job fast. I was lucky to find the job I had now. Unfortunately, it wasn't one I could work on at home. Every day I had to take the train into Chicago, a two-hour commute in both directions. I left the house so early and came home so late, so I felt like I barely got to see my baby.

    I was grateful that Rick was at home caring for her, but it was not her mother. Every minute away from her I felt like I was abandoning her.

    Looking around at the windows, I remembered when Rick and I bad first decided to try for a baby. My friend Renee was almost as excited as I was when I told her about it.

    “I've got something for you,” she said one afternoon when I her for lunch. She pulled a medal out of her purse.

    “Fix this to your clothes every day,” she said. “You'll have a baby in no time.”

    Not long after I learned I was pregnant, I was thrilled at first. But little by little I started to worry: Was my baby okay? What if something happened? The doctor assured me things were going smoothly. My family gave me support. Rick tried to encourage me. I even continued to wear my medal. But no matter what anyone said, I couldn't shake off my worries.

    Now that Mary Ellen was born I had new worries about motherhood. Is this how life was going to be from now on, with every stage of my child's life bringing new fears and anxieties?

    I thought of Renee and her gift of the medal, feeling hopeful. On my way to the door I stopped at the gift counter. I'd missed the early train, so there was time to look around. I went over to a box full of angel cards, thinking of Renee. So many things could happen in the future as Mary Ellen grew up, went to school and went out on her own. So many things to worry about. It would take an army of angels to cover them all.

    I saw a familiar face in the box. It almost felt like I was looking at a friend, someone who cared about my baby as much as her father and I did: On the back of the card was a date. “October sixteenth?” I said, not believing my eyes.

    “That's the angel's birthday,” the woman at the counter told me. I nearly burst out laughing right there. Mary Ellen's birthday! Maybe I couldn't be with Mary Ellen every minute. But never again would I worry that she was out of the angers protection, or doubt that she had a special friend.

    Recently, we have already shown that climate change has led to a dramatic increase in storm surge risk in New York City, making devastating events like Hurricane Sandy more likely.

    What can we say about the role of climate change in the unprecedented disaster that is unfolding in Houston with Hurricane Harvey? There are certain climate change-related factors that we can, with great confidence, say worsened the flooding.

    Sea Level rise attributable to climate change-some of which is due to coastal subsidence(下沉) caused by human disturbance such as oil drilling-is more than half a foot(15cm) over the past few decades. That means the storm surge was half a foot higher than it would have been just decades ago, meaning far more flooding and destruction.

    In addition to that, sea surface temperatures in the region have risen about 0.5C(close to 1F) over the past few decades from roughly 30C(86F) to 30.5C(87F), which contributed to the very warm sea surface temperatures(30.5-31C, or 87-88F). There is a simple thermodynamic(热力学的) relationship known as the Clausius-Clapeyron equation that tells us there is a roughly 3% increase in average atmospheric moisture content for each 0.5C of warming. Sea surface temperatures in the area where Harvey intensified were 0.5-1C warmer than current-day average temperatures, which translates to 1-1.5C warmer than “average” temperatures a few decades ago. That means 3-5% more moisture(水分) in the atmosphere. That large amount of moisture creates the potential for much greater rainfalls and greater flooding. The combination of coastal flooding and heavy rainfall is responsible for the devastating flooding that Houston is experiencing.

    Not only are the surface waters of the Gulf of Mexico unusually warm right now, but there is a deep layer of warm water that Harvey was able to feed upon when it intensified at near record pace as it neared the coast. Human-caused warming is penetrating down into the ocean. It's creating deeper layers of warm water in the Gulf and elsewhere. Harvey was almost certainly more intense than it would have been in the absence of human-caused warming, which means stronger winds, more wind damage and a larger storm surge.

    Finally, the more tenuous but potentially relevant climate factors: part of what has made Harvey such a devastating(毁灭性的) storm is the way it has stalled near the coast. It continues to strike Houston and surrounding regions with a seemingly endless flood, which will likely top out at nearly 4ft(1.22m) of rainfall over a days-long period before it is done. The stalling is due to very weak prevailing winds, which are failing to steer the storm off to sea, allowing it to spin around and wobble back and forth. This pattern, in turn, is associated with a greatly expanded subtropical high pressure system over much of the US at the moment, with the jet stream pushed well to the north. This pattern of subtropical expansion is predicted in model simulations of human-caused climate change. More tenuous(微弱的), but possibly relevant still, is the fact that very persistent, nearly “stationary” summer weather patterns of this sort, where weather anomalies(both high-pressure dry hot regions and low-pressure stormy/rainy regions) stay locked in place for many days at a time, appears to be favoured by human-caused climate change.

    In conclusion, while we cannot say climate change “caused” Hurricane Harvey, what we can say is that it exacerbated several characteristics of the storm in a way that greatly increased the risk of damage and loss of life. Climate change worsened the impact of Hurricane Harvey.

    Students in a college French class have helped fill the empty bookshelves of a very poor Haitian(海地的) school by writing 90 books. Although many children in Haiti speak Creole(克里奥尔语) at home, French is taught in classrooms and used by the government , and students are asked to know the language in order to get further education. Therefore, the class hoped to provide resources to help the young students learn French well.

    The project, called Little French Books, was headed up by Jennifer Shotwell, a French professor at Randolph-Macon College in Ashland, Virginia. Shotwell had visited Haiti with a group of students in 2013 to support a Haitian student and give books to a new library. Following the trip, Shotwell brought the experience back to her classroom.

    "My students have a chance to use the French language in a special way by writing children's books," Shotwell said. "Though some learners don't think they can produce much with a new language, my students are learning to express themselves and create entertaining stories that we finally share with disadvantaged children who are also learning French."

    Shotwell had sent French books to Haitian schools, but they were printed on cheap paper that could be easily broken. So she started a Kickstarter, which collected more than $1,000 to make books with durable covers.

    The books, which included stories about princesses, dinosaurs and exciting experiences, were given to the St.Gabriel's school in Lascahobas.

    "Each time a child gets into a new book, he will no doubt get new knowledge and new understanding. The Little French Books means a lot to our students, said Gardy Myrtil, a teacher at the school.

    The Z Hotel is in the heart of London's West End and has comfortable accommodation in a contemporary design.

    All rooms include handcrafted beds, 48-inch Samsung HD TVs with free Sky Sports and Movie channels, and free Wi-Fi. Each room also has under-bed storage for an overnight bag, and wall-mounted hanging space for clothing. The Z Hotel also offers wheelchair accessible rooms.

    Continental breakfast is served in The Z Cafe every morning, including smoked salmon, fresh bread, fresh fruit salad and bacon rolls. A selection of salads, sandwiches and hot dishes are on offer throughout the day.

    The hotel is a 5-minute walk from Prince of Wales Theatre and Chinatown London, Leicester Square, Piccadilly Circus and Trafalgar Square. Heathrow Airport can be reached directly from Piccadilly Circus Underground Station.

    This is our guests，favorite part of London, according to independent reviews. This area is also great for shopping, with popular brands nearby: Apple, H&M, Zara, Burberry and Chanel.

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    Robots come in many shapes and sizes. But most have one thing in common. They are built to help people. Lately engineers have been developing new kinds of humanoid robots. These high-tech machines are designed to lend a hand everywhere from hotels to disaster areas.

    "Robots help people by making their lives easier, safer, and more fun," says engineer Omar Abdelwahed.

    Since November, a robot named pepper has been on the job at the Mandarin Oriental hotel in Las Vegas, Nevada. When guests have questions or need directions, they can ask Pepper. They can also use the robot's touch screen to find the information they need. Pepper is able to talk with guests and entertain them with stories too. It can even tell what kind of mood they are in.

    "Pepper provides our guests with information in an exciting and new way," says hotel manager Donald Bowman.

    For a kid, being in the hospital can be boring and even scary. But a small robot called NAO is helping to make hospital stays easier. It was designed to keep people company.

    A Tennessee doctor named Phil Parker bought a NAO robot three years ago. He programmed it to talk to and play with young patients. He brings it to hospitals to help sick kids. When kids get medical tests, NAO explains what is going on. The robots also reads to kids and plays games with them like rock, paper, scissors.

    "The robot gets many kids to smile for the first time since they've been in the hospital," Parker says.

    Other robots are being developed to help in places where it's hard or risky for people to go. For example, disaster areas can be full of rubble and other dangers. Engineers in Japan are building a robot called E2-DR to go into those areas and search for people who are hurt.

    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.