Harvard researchers have created a tough, low-cost, biodegradable (可生物降解的) material inspired by insects' hard outer shells. The material's inventors say it has a number of possible uses and someday could provide a more environmentally friendly alternative to plastic. The material, made from shrimp ('虾) shells and proteins produced from silk, is called "shrilk." It is thin, clear, flexible and strong.

    A major benefit of the material is its biodegradability. Plastic's toughness and flexibility represented a revolution in materials science during the 1950s and '60s. Decades later, however, plastic's very durability (耐用性) is raising questions about how appropriate it is for one-time products such as plastic bags, or short-lived consumer goods, used in the home for a few years and then cast into a landfill where they will degrade for centuries. What is the point of making something that lasts 1,000 years?

    Shrilk not only will degrade in a landfill, but its basic components are used as fertilizer(肥料), and so will enrich the soil.

    Shrilk has great potential, the inventors said. Materials from which it is made are plentiful in nature, found in everything ranging from shrimp shells, insect bodies to living plants. That makes shrilk low cost, and its mass production possible should it be used for products demanding a lot of material.

Work on shrilk is continuing in the lab. The inventors said the material becomes flexible when wet, so they're exploring ways to use it in wet environments. They're also developing simpler production processes, which could be used for non-medical products, like for computer cases and other products inside the home. They're even exploring combining it with other materials, like carbon fibers, to give it new properties.

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    Binge-watching (刷剧) is when a person watches more than one episode of a TV show one after another. With developments in the speed and connectivity of the Internet, increases in technology and the rise of on-demand entertainment companies, people can now watch their favorite shows directly on the Internet at their convenience.

    This behavior is nothing new. In fact, “binge-watching” has been officially listed in dictionaries since 2015. The entertainment companies recognize this behavior and many take steps to encourage it. Often, instead of releasing each episode on a week-by-week basis, an entire series will become available at the same time. Once the episode finishes, many platforms will display pop-ups with “you might like” suggestions, or will automatically play the next episode.

    However, this wonderful gift may in fact be poisonous. Recent research from British media Ofcom suggests that this behavior may have become a hindrance (障碍). Out of the more than half of British adults who watch more than one episode of a show in a row, almost a third have admitted missing sleep or becoming tired as a result; and one quarter have failed to do their household chores. Next well be missing work!

    Bingeing has other connections—binge eating, binge drinking and binge smoking, all of which are often associated with compulsive (强迫性的) behavior, a lack of control and possible route to addiction. Lindsey Fussell, consumer group director at Ofcom, said, “The days of waiting a week for the next episode are largely gone, with people finding it hard to resist watching multiple episodes around the house or on the move.” If people find binge-watching hard to resist, coupled with the fact that it has shown to lead to negligence (疏忽) in many, are we witnessing the birth of a new type of addiction?

    The large amount of information and entertainment that television and online media can bring us is, many would say, a good thing. It offers us opportunities to better understand the world we live in, educate ourselves and enjoy much needed downtime. However, like any behavior done to an extreme degree, it can become dangerous. And when the activity begins to bleed into other areas, causing us to stop functioning-then it becomes a problem. So, what's the answer? Neither a tiny amount, nor too much. After all, as the old proverb says, a little of what you fancy does you good.

    Courses Available at North Coast College Campuses

    Agriculture

    Specialist agriculture centres of the North Coast College offer courses ranging from agricultural skills to beef production, horse studies and rural management. The Wollongbar Campus is famous for its Tropical(热 带的) Fruit Growing program and has introduced courses on bush foods and coffee production. Taree offers the Veterinary(兽医的) Assistant program and has introduced “Agristudy”, which enables students to learn flexibly and by correspondence( 函 授 ), using a mixture of student learning guides, telephone tutorials, information sessions and workshops. Mullumbimby has the popular Rural Business Management program, which can also be studied by correspondence. Grafton, meanwhile, offers traineeships in agriculture including beef and dairy.

    Health Programs

    The continued improvement of healthier living within the community has seen an increase in fitness awareness and a need for trained staff in the Fitness and Sport industries. Fitness Instruction courses are offered at Tweed Heads and teach students how to keep healthy and lead a safe fitness program.

    Lismore offers the Aged Support program and Port Macquarie offers the Early Childhood Nursing program. These courses give you the theoretical skills, knowledge and practical experience needed to work in a variety of residential and community-based health care institutions. For students interested in working in the Medical Health Care industry, Kingscliff is a specialist centre for the Natural Therapy Diploma and has a health clinic on campus.

    Environmental Studies

    The Environmental Studies courses offered by the North Coast College have been developed to help students increase their awareness and understanding of environmental issues and to enable them to determine their environmental impact. The Environmental Practice course, which includes Coastal Management, is offered through the Ballina Campus.

    For people interested in working to protect natural forests, the North Coast College offers the Forest Protection course at Casino. This course can provide a pathway for students into the Natural Resource Management Diploma at university.

    In the middle of the 19th century，a fever dream of riches beyond measure drew countless explorers west to the mountains of central California. Although the gold rush ended up being a bust for many who sought a fortune，some of those explorers discovered a natural treasure that would draw permanent settlers to Yosemite Valley in the following decade.

    Vast wilderness，beautiful mountains，countless waterfalls，and abundant wildlife drew Native Americans to Yosemite roughly 10，000 years ago. The first non-native tourists arrived in the mid-1850s after reports from gold seekers told of an area of breathtaking beauty that no words were able to describe.

    Fortunately，some of Yosemite's earliest settlers recognized that Yosemite's natural beauty and resources needed to be preserved for future generations. In the midst of the Civil War，President Abraham Lincoln signed a grant to protect Yosemite permanently，thus making it the nation's first land to be dedicated to recreation and setting the stage for what would become the national park system.

    One of Yosemite's earliest ambassadors was Scottish-American naturalist and writer John Muir. After living in Yosemite for a few years，he helped define its proposed boundaries. He also wrote articles that helped lead to its official title as a National Park in 1890.He later co-founded the Sierra Club in 1892 to advocate for its continued preservation and protection.

    Located on the western slope of the Sierra Nevada mountain range in central California，Yosemite National Park runs across nearly 748，000 acres，almost 95％of which is wilderness. Around four million visitors come to Yosemite each year to camp，hike its miles of trails，climb its rock formations，and photograph its impressive sights. Are you ready to visit Yosemite National Park? Which of Yosemite's sights would you most like to experience?

Elizabeth Bishop is considered one of the best American poets of the 20th century. She was born in Worcester, Massachusetts in 1911. Her dad died when she was just a baby and her mom never recovered from the loss; she went to live with her grandparents in Nova Scotia, Canada when she was five. Eventually Bishop attended Vassar College, where she began to write poetry.

At Vassar she discovered Marianne Moore's poetry and met "Ms. Moore" and began their life-long friendship. She later met poet Robert Lowell. She wrote tons and tons of letters to both of them, which is good for us because we would otherwise know very little of her personal life. Bishop's poetry is sometimes considered objective and cold because it shows almost nothing about the poet or her life.

Bishop published her first book of poetry in 1946 and wrote until her death in 1979. She would spend years working on a single poem. Her poems are not the result of hasty scribbling (匆忙乱写) on paper while eating breakfast. Over a lifetime of writing, she only published about 275 pages of poetry, and about 40 of those are translations. She would look through drafts of poems again and again and improve them until they were as close to perfect as she could get them.

Reading Elizabeth Bishop is like being transported to the very place, the very moment she's writing about. She leads us to a microscope so we can see every smallest part of the scene. It seems she's always asking us to notice more, and more until the poem is so clear in our minds that it's almost painful — like a light that's too bright. It might take your eyes a while to get used to it, but once they do, you'll like what you see.