On 29 May last year, I was doing my swim training for a half Ironman race in the bay near my home.

    I was finishing my first loop (圈) when I felt jaws coming around my body and a sharp pain. The water was dark, so I couldn't see anything. It just came out of nowhere and then it was gone in a flash. I knew it was something really big and assumed it was a shark. I panicked, but knew I needed to get out of the water. I was kicking wildly in case it came back. There was a lifeguard boat close by, so I waved my arms in the air and screamed for help. It got to me within 20 seconds. At that point I didn't feel anything; adrenaline (肾上腺素) had taken over. The lifeguards held me under the arms and pulled me up out of the water. Then the pain kicked in and it was pretty hard to bear. Some muscle had been bitten off my right arm. I felt a lot of warm, gushing blood.

    My chest felt heavy, as if someone had put their foot on it, and I was having trouble breathing. It was extremely painful. When I got to the hospital, I told the nurses to put me to sleep because of the pain. I just wanted them to fix me.

    I woke up after surgery four hours later. My doctor was amazed when I managed to move my fingers: the bite just missed a major nerve. My right lung had been damaged; I had several broken bones and a nerve in my leg was cut, so I have reduced feeling at the top of my leg. The shark also bit through my upper back muscle.

    Local experts determined that the shark was probably 9-10 feet long. It was young, about seven years old. It just attacked me, left and didn't come back because it figured I wasn't food.

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    Shopping is a big part of the holiday season,when families and friends gather together and exchange gifts.While the popularity of shopping online has grown,such practices are not always eco-friendly or timely,as gifts bought online must be packaged and shipped,wasting valuable resources and time.

    The benefits of shopping locally go beyond convenience and reduce your carbon footprint.The following are a few ways that shopping locally this holiday season can directly benefit your community and the people who call it home.

    When men and women shop locally,they are putting money back into their local communities.Local businesses may be owned by your neighbors,and it can be comforting to know that your holiday shopping dollars are going to support a neighbor instead of a large company.Local businesses also employ your neighbors,so shopping locally can strengthen the local economy by creating jobs.

    Local businesses go a long way toward creating a neighborhood identity,and that identity can create a stronger sense of community among you and your neighbors.In addition,a unique community    identity can make your town more attractive to outsiders,and can also attract more people to local businesses in your neighborhood.

    The gifts you buy when shopping locally can also benefit your community.Gifts purchased from small local businesses tend to be more unique than items bought from national chains,as smaller retailers tend to sell more home-made items than their national competitors.Recipients of such items may find such gifts more thoughtful than mass produced items bought from national chains.

    The accessibility of customer service is another benefit of shopping locally.When you buy something from national chains,especially during the holiday season when such businesses may have to deal with orders,making contact with customer service departments can be a test of patience.A long wait on the phone or online can make the process of contacting customer service departments extremely frustrating.But such frustration is rare when shopping from local businesses,as consumers can simply buy their products in the store.In addition,shopping locally makes it more convenient for friends and family members who also live in your community to return their gifts.

    Many of us have had this experience: we lie down in a bed other than our own, perhaps at a friend's house or in a hotel room, and find it difficult or impossible to fall asleep. Is it because the bed is uncomfortable? Maybe, but perhaps there can be other reasons.

    According to a new study published in Current Biology, a significant reason is what the scientists call "first night effect". They believe that one side of the brain acts as a "night watch" to warn us about potential dangers. It forces us to stay awake on the first night in a new environments.

    For the study, 35 young volunteers were asked to sleep in a sleep lab for several days. Meanwhile, researchers watched their brain activities.

    According to the researchers, on their first night, the left brain was more active than the right brain and people had a hard time sleeping. However, left-brain activities decreased as days went by, falling even to the point of complete calm. In this process, the participants got an increasingly better sleep experience.

    The findings suggest that the different rhythms of the sides of the brain affect our sleep. When the two sides work differently, the balance between them is broken. Thus, the brain can't relax and is sensitive to anything strange in the surroundings, just as it is in the daytime.

    "At some level, the brain is continuing to analyze things, even though you are not aware of the analysis, " US professor Jerome Siegel told Smithsonian

    "If something unusual happens - if a door opens or you hear a key in a lock --you can be alert, even though the intensity of the stimulus (刺激强度) is quite low." More surprisingly, this phenomenon is similar to the way some animals sleep.

    The researchers think that it is the result of evolution (进化), and works to protect us in potentially dangerous environments.

    If you have ever had what you think is "first night effect", researchers suggest that you bring your own pillow or sleep in a room similar to your bedroom next time you sleep away from home.

    Actors Keira Knightley and Kristen Bell have both commented on their worries about using Disney princesses as role models for their children.

    On a famous talk show, Knightley said her daughter (who was born in 2015) was "banned" from watching Cinderella, which Disney produced as a cartoon in 1950 and a live-action film in 2015. "Cinderella waits around for a rich guy to rescue her. Don't. Rescue yourself! Obviously."

    Knightley added that she had also forbidden The Little Mermaid, the 1989 cartoon. "This is the one that I'm quite annoyed about because I really like the film. I mean, the songs are great, but do not give up your voice for a man. Well, that's a little difficult to handle, but I'm keeping to it."

    Bell, the star of Frozen, expressed her disapproval of the Snow White fairytale, which became a classic Disney cartoon in 1938. In an interview with parents, Bell said: "I look at my girls and ask, ‘Don't you think it's very unusual that Snow White didn't ask the old witch why she needed to eat the apple? Or where she got that apple?' I say, 'I would never take food from a stranger, would you?' And my kids respond, 'No!' And I think I'm doing something right."

    Bell, who played a Disney princess in Frozen, said she also used the story to illustrate issues about permission. She says that she asked her children: "Don't you think that it's very strange that the prince kisses Snow White without her permission? … Because you cannot kiss someone if they're sleeping!"

    Bell later responded to criticism on social media. To one user she wrote: "Everything is a message to our children, because they are sponges(海绵) that soak up everything and are learning how to be adults through what they see. I want my girls to see and practice critical thinking and respectful behavior."

    We love the sea. We swim into it, live near it, build beside it, and even imagine about living under the sea. But we're terrified of it, too. For much of our history, we have turned to "hard engineering" to control the marine (海洋) environment and manage its influence on us. We build dams, sea walls and channels. But all these efforts seem to fail. The sea has a habit of taking back its own. And we suffer.

    Johnston, a marine ecologist, is advocating for "blue engineering" — the marine version of the "green engineering" movement on land that has seen nations like Singapore building the walls and roofs of the concrete jungle with plant life.

    We are expanding further into the marine environment. This practice does harm lo marine ecosystems. We're loving the sea to death, but we've not been thinking about design of structures (建筑物) with respect to ecology. Some coastal structures create shade, which reduces the growth of seaweed. Bright lights at night contuse species such as turtles. That's why blue engineering comes in.

    Throughout the world people are starting to turn things around. Researchers with the World Harbour Project are creating tiles (瓦片) similar to the natural structures found on rocky shores with 3D printing technology. These make more attractive homes for marine creatures. Researchers are also actively seeding these tiles with local seaweeds and creatures such as the Sydney rock oyster, which is particularly good at improving water quality. Twelve harbours around the world are taking part in this marine tile experiment, each working with their own unique marine life.

    It's a far cry from, he days when huge number, of old tyres were thrown, into the sea to build "artificial reef" (礁石). Those clumsy early attempts are now costing millions to remove, showing just how far we have yet to go in understanding how best to co-habit with the underwater world.

Volunteer with ICS and make a difference in 2019

    Raleigh International are looking for young people to volunteer overseas with ICS, development program which is fully funded by the UK Government, ICS aims to bring about three things: project impact, volunteer personal development and the creation of active citizens.

    •Aged 18-25 Apply as a volunteer. Placements last 10 weeks.

    •Aged 23-35 Apply as a learn leader. Placements last from 14 weeks to 8 months.

    Your impact

    •With Raleigh ICS, you will focus on improving people's access to water and health care, or supporting women and young people to set up small businesses in order to improve community development.

    •You will contribute to sustainable development and make a real difference to the lives of people living in poverty.

    What's in it for you?

    •It won't cost you a penny.

    Your flights, visas, vaccines, training,food, medical insurance and accommodation are all covered.

    •You'll have a completely unique experience.

    Living with a host family for 10-12 weeks, experiencing a new culture and working with local volunteers, you'll be part of the community.

    •You'll be more employable afterwards.

    •You'll gain teamwork, leadership and communication skills, which will make you stand out and set you up well for whichever career you choose.

    Interested? Apply online today.

    Requlrements

    •You'll need a positive attitude, commitment, and drive to make a difference.

    •You must be a UK or EU/EEA citizen and have lived in the UK for at least 12 months.

    •You'll be asked to raise a minimum of £800 to demonstrate your commitment to the program.