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    So what is rewilding?

    Imagine our natural habitats growing instead of shrinking. Imagine species thriving, instead of declining. That's rewilding. Rewilding is ecological restoration and a little bit more. Rewilding offers hope for wildlife, humans and the planet.

    Why is rewilding essential for Britain?

    ●Our ecosystems are broken. The places where you would expect wildlife to thrive have been reduced to wet deserts. The seabed has been damaged and stripped of its living creatures.

    ●Our wildlife is disappearing. Many wonderful British species have declined catastrophically over the past century. We've lost more of our large mammals than any European country except Ireland.

    ●We need keystone species. These vital species, including top predator（食肉动物）,drive ecological processes. Their loss in Britain and around the world has worsened our living systems.

    ●Nature looks after us. Good ecosystems can provide us with clean air and water, prevent flooding, store carbon, and attract visitors. Rewilding can leave the world in a better state than it is today.

    What are challenges?

    Our "rewilding britain" is a long-term project. Of course it has its challenges. Many of us feel indifferent, because we have got used to the lack of native forests. Many farmers oppose the idea. They thought it a crazy idea to bring back predators to the country because they would start killing farm animals. It takes time to educate them. Above all, we need money! So we need your help!

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●Open up new opportunities for rewilding and push for change.

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    There are 5.25 trillion pieces of plastic trash in the world's oceans, and each year, 8 million tons of plastic are added to the figure. Though the oceans seem vast enough to stomach a lot of plastic, the level of waste is starting to reach a crisis point: According to a new report by the Ocean Conservancy, by 2025, the ocean could contain one ton of plastic for every three tons of finfish.

All these floating bits of plastic not only disrupt marine ecosystems, but they also poison the global supply of seafood. “It's reaching crisis proportions,” says Andreas Merkl, CEO of the Ocean Conservancy. “Plastic breaks down into small pieces that look like plankton and is eaten by everyone from plankton to whales.” Plastic acts as a pollution sponge in the ocean, so when wildlife swallow pieces, the plastic might as well be a poison pill.

    The new report calls for a focus on improving waste management systems in a handful of developing countries that are most responsible for the plastic leakage into the ocean. China, Indonesia, the Philippines, Thailand and Vietnam contribute more than half of the oceans' plastic since their waste facilities hasn't kept up with rapid industrialization.

    On average, only about 40% of waste in these countries is actually picked up for disposal. But it's not just uncollected waste floating around-though that is three-fourths of the problem. The other quarter of the oceans' plastic came from post-collection activities. Even when a waste management company picks up waste to landfill it, poorly equipped landfills or illegal dumping mean that trash still ends up in the ocean.

    But how can countries stop the leakage of waste into the ocean? The Ocean Conservancy report suggests five “levers”: waste collection services, closing the leakage points within the collection system, gasification and burning of waste, and recycling facilities. The average waste ends up as litter. Just by expanding collection systems and plugging up their leakage points, the report says plastics leakage could by cut by 50% by 2020.

    It's not just an environmentalist's daydream. Coca-Cola and Dow Chemical, along with some other multinational companies have joined forces with Ocean Conservancy to fight ocean pollution. “We're committed to working toward a future of a plastic-free ocean. Companies don't make plastic with the intent of it ending up in the ocean, and we acknowledge the strong role industry must play in order to help eliminate ocean plastic waste by 2035.” Says Dow Packaging and Speciality Plastics' global sustainability director in a press release.

    Merkl emphasized that the countries can't recycle their way out of the problem. Only about 20% of the waste is valuable enough to be worth recycling: the rest, needs to be sent to sanitary landfills or waste-to-energy plants. “You have to concentrate on the fundamentals of waste management,” he says. And while building landfills and incinerators(焚化炉)across these developing countries might not be pretty, it's far more environmentally friendly than letting waste slide into the world's oceans.

    For an increasing number of students at American universities, Old is suddenly in. The reason is obvious: the graying of America means jobs, coupled with the aging of the baby-boom generation, a longer life span means that the nation's elderly population is bound to expand significantly over the next 50 years. By 2050, 25 percent of all Americans will be older than 65, up from 14 percent in 1995.The change poses profound questions for government and society, of course. But it also creates career opportunities in medicine and health professions and in law and business as well. “In addition to the doctors, we're going to need more sociologists, biologists, urban planners and specialized lawyers,” says Professor Edward Schneider of the University of Southern California's (USC) School of Gerontology（老年学）.

    Lawyers can specialize in “elder law”, which covers everything from trusts and estates to nursing-home abuse and age discrimination. Businessmen see huge opportunities in the elder market because the baby boomers, 74 million strong, are likely to be the wealthiest group of retirees in human history. “Any student who combines an expert knowledge in gerontology with, say, an MBA or law degree will have a license to print money,” one professor says.

    Margarite Santos is a 21-year-old senior at USC. She began college as a biology major but found she was “really bored with bacteria.” So she took a class in gerontology and discovered that she liked it. She says, “I did volunteer work in retirement homes and it was very satisfying.”

    Stars blazed(猛烈地燃烧)in the sky above Spook like a million tiny suns. They shone through the mists, which had during the last year become thinner and weaker. At first, he had thought the world itself was changing. Then he had realized that it was just his feeling. Somehow, by burning tin in his body for so long, he had permanently strengthened his senses to a point far beyond what other Allomancers could attain.

    The burned tin had begun as a reaction to Clubs's death. Spook still felt terrible about the way he'd escaped, leaving his uncle to die. During those first few weeks, Spook had burned his metals as almost a self-punishment he'd wanted to feel everything around him, take it all in, even though it was painful, or perhaps because it was painful.

    But then he'd started to change, and that had worried him. But, the crew always talked about how hard Vin pushed herself. She rarely slept, using pewter(白镴)to keep herself awake and alert. Spook didn't know how that worked he was no Mistborn, and could only bum one metal but he figured that if burning his one metal could give him an advantage, he'd better take it, because they were going to need every advantage they could get.

    The starlight was like daylight to him. During the actual day, he had to wear a cloth tied across his eyes to protect them, and even then going outside was sometimes blinding. His skin had become so sensitive that each little stone in the ground felt like a knife jabbing(猛刺)him through the bottom of his feet. The cold spring air seemed freezing, and he wore a thick cloak(斗篷).

    However, he had concluded that these discomforts were small prices to pay for the opportunity to become whatever it was he had become. As he moved down the street, he could hear people turning over and over in their beds, even through their walls. He could sense a footstep from yards away. He could see on a dark night as no other human ever had.

       ①   Always before, he'd been the least important member of the crew the dismissible boy who served as a handy man or kept watch while the others made plans. He didn't feel annoyed with them for that he'd been right to give him such simple duties.   ②    Because of his street dialect, he'd been difficult to understand, and while all the other members of the crew had been carefully picked, Spook had joined through the back door since he was Clubs's nephew.

    Spook sighed, sticking his hands in his trouser pockets as he walked down the too-bright street. He could feel each and every thread of the cloth.

    Dangerous things were happening he knew that: the way the mists lasted longer during the day, the way the ground shook as if it were a sleeping man, periodically(周期性地)suffering a terrible dream. Spook worried he wouldn't be of much help in the critical days to come. A little over a year before, his uncle had died after Spook fled the city. Spook had run out of fear, but also out of a knowledge of his lack of power.   ③    He wouldn't have been able to help during the campaign.

    He didn't want to be in that position again. He wanted to be able to help, somehow. He wouldn't run into the woods, hiding while the world ended around him. He was sent to gather as much information as he could about the Citizen and his government there, and so Spook intended to do his best. If that meant pushing his body beyond what was safe, so be it.

    He approached a large crossing. He looked both ways down the intersecting(交叉的)streets the view clear as day to his eyes. I may not be Mistborn, and I may not be emperor, he thought. But I'm something. Something new. Something people would be proud of Maybe this time I can help.   ④    

    Smile! It makes everyone in the room feel better because they, consciously or unconsciously, are smiling with you. Growing evidence shows that an instinct for facial mimicry(模仿) allows us to empathize with and even experience other people's feelings. If we can't mirror another person's face, it limits our ability to read and properly react to their expressions. A review of this emotional mirroring appears on February 11 in Trends in Cognitive Sciences.

    In their paper, Paula Niedenthal and Adrienne Wood, social psychologists at the University of Wisconsin, describe how people in social situations copy others' facial expressions to create emotional responses in themselves. For example, if you're with a friend who looks sad, you might "try on" that sad face yourself without realizing you're doing so. In "trying on" your friend's expression, it helps you to recognize what they're feeling by associating it with times in the past when you made that expression. Humans get this emotional meaning from facial expressions in a matter of only a few hundred milliseconds.

    "You reflect on your emotional feelings and then you generate some sort of recognition judgment, and the most important thing that results in is that you take the appropriate action—you approach the person or you avoid the person," Niedenthal says. "Your own emotional reaction to the face changes your perception of how you see the face in such a way that provides you with more information about what it means."

    A person's ability to recognize and "share" others' emotions can be prevented when they can't mimic faces. This is a common complaint for people with motor diseases, like facial paralysis(瘫痪) from a stroke, or even due to nerve damage from plastic surgery. Niedenthal notes that the same would not be true for people who suffer from paralysis from birth, because if you've never had the ability to mimic facial expressions, you will have developed compensatory ways of interpreting emotions.

    People with social disorders associated with mimicry or emotion-recognition damage, like autism(自闭症), can experience similar challenges. "There are some symptoms in autism where lack of facial mimicry may in part be due to limitation of eye contact," Niedenthal says.

    Niedenthal next wants to explore what part in the brain is functioning to help with facial expression recognition. A better understanding of that part, she says, will give us a better idea of how to treat related disorders.

    The world's oceans will likely lose about one-sixth of their fish and other creatures within 100 years if climate change continues on its current path. Every degree Celsius that the world's oceans warm, their biomass is expected to drop five percent, a study found.

    The study predicts that if there is no change in the rate of worldwide greenhouse gas production, there will be a 17-percent loss of biomass by the year 2100. But, if the world reduces carbon pollution, biomass losses could be limited to only about 5 percent.

    Warming temperatures are the biggest issue. But climate change also produces oceans that are more acidic and have less oxygen. This also harms sea life. Much of the world depends on the oceans for food or work.

    The findings make sense and the possible effects of the predicted losses of animal life are huge. "Climate change has the potential to cause serious new conflicts over ocean resource use as the human population continues to grow," said scientists.

    Marine biologist Boris Worm, who helped run the study, added that the "building blocks of marine life—plankton and bacteria—may decline less heavily."

    "Those marine animals that we use directly, and care about most deeply, are predicted to suffer the most," said Worm. He works at Canada's Dalehousie University.

    Scientists had already believed climate change would likely reduce future ocean life. But past computer-based studies looked at only part of the picture or used only one model. The latest study used six different computer models to give the best picture look yet, William Cheung said.

    University of Georgia marine biologist Samantha Joye was not part of the research. But she praised the study as well researched and extremely detailed, and called it "an urgent call for action".