Don't you just hate it when you have to take an important phone call and you're surrounded by potential eavesdroppers(潜在偷听者)? You either have to whisper or go outside to keep the conversation private, which is not good. Now Hushme aims to fix this problem by muffling your voice and making you look like Bane in the film Batman.

    Hushme is a strange high-tech mask(口罩)that blocks the sound of the wearer's voice so that people nearby can't hear what is being said. It connects to your phone via Blucetooth and comes with a pair of earphones. When you get a private call, all you have to do is put the mask on and it will do the rest. The pair of thick pads over your mouth does a good job of muffling your voice, but to ensure nothing gets through. Hushme also has speakers that play a variety of sounds when you speak.

    The Hushme mask, which comes in a variety of colors, can be worn around the neck, like a regular pair of earphones, and attaches in front of your mouth thanks to a couple of very powerful magnets(磁铁). It's not yet clear how comfortable speaking with this Bane-like mask over your mouth really is, or how effective its speech muffling ability is, so we know so far is that it makes you look strange. The sound choices for covering your voice currently include wind, ocean, rain, birds, monkey, but new ones could be added in the future.

    Advertised as the “world's first voice mask for mobile phones'. Hushme was showed at CES. At the becoming of this year. Its makers plan to sell it by the end of this year. It will cost about $200.

    Anaya Elick was born without hands – she has stubs（残端）where most people's wrists begin.

    To hold a pencil, she must balance it between her wrists, then use her arms to push it along the page. But that didn't stop her from winning a national handwriting contest when she was in first grade.

    In the two years since, she has taken on greater challenges. Last week, she won another national handwriting contest, this one for cursive（草书）. And by all accounts from her teachers at Greenbrier Christian Academy, she has become an accomplished artist.

    Anaya isn't one to boast about her successes. She unwillingly says they make her proud but adds that they come from “lots of practice.”

    Her friends at school said, “She inspires everybody by what she does and how she does it” child to fail, and raising one who was born with a disability can heighten that protective instinct.

    Before Anaya was born, doctors knew about her condition, although not its cause. Other than having no hands, she is a regular 9-year-old girl.

    Anaya succeeds because she is not afraid to fail, Middleton said. The two began practicing cursive last year, when Anaya was in second grade. She struggled sometimes, because unlike traditional penmanship, which allows for breaks after each letter, cursive words are written straight through – and added effort for someone who must balance rather than hold the pencil.

    Middleton could see her daughter thinking through the challenge, figuring out how she could do better. She'd get frustrated at times, but she never hesitated to do things as often as it took to get them right.

    “I don't think I've ever heard Anaya say I can't do something,” Middleton said.

    That attitude carries over to her other interests.

    Recently, Anaya and her classmates sat in Cheryl Leader's art room, working on an exercise. The goal was to get them thinking about different concepts, like color combinations and how an image can be formed by fully coloring inside straight and diagonal lines.

    Both honeybees and ants are social insects that live in groups called colonies. They survive by means of their collective intelligence. Their decision-making power is distributed throughout the group; that is, no one ant or bee makes decisions for the group. Instead, they work together. As Deborah M. Gordon, a biologist at Stanford University, says," Ants aren't smart. Ant colonies are."

    The same is true for bee colonies. Although bees and ants are quite different physically, they have a lot in common in terms of their social behavior. Specifically, honeybees and ants have similar roles within the colony, both have communication systems, and both have the capacity for learning.

    Ants communicate by using chemicals called pheromones, which can alert others to danger or to a food source. For example, when worker ants find a promising source, they let the rest of the colony know how to find it by leaving a trail of pheromones on the way back to the colony. The other ants pick up the message using their sense of smell. Bees, on the other hand, use movement to communicate with each other. Worker bees send messages to each other by means of a "dance". Different speeds and movements send different messages. For example, when worker bees called scouts go out to find a new home for the colony, they return and do a dance for the other worker bees that indicates the location of the new home and how suitable it is. The faster the scouts dance, the better the new location is.

    Honeybees and ants are both capable of learning. One Chinese study found that bees can be trained to learn and remember a route to a food source. The researchers also found that bees can be taught to recognize hidden objects and use the concepts of "sameness" and" difference" to accomplish certain tasks. Ants take this one step further. Recent American research has shown that ants not only have the ability to learn, but also can teach their foraging skills to other younger ants.

They observed that older ants accompany young ants in search of food and teach them the route and how to avoid obstacles.

    As we can see, the social behavior of honeybees and ants is quite similar. Both coordinate complex actions and accomplish crucial survival tasks by cooperating in groups consisting of many individuals. Unintelligent as they may be as individuals, as groups they often show amazing brilliance as they go about their everyday activities.

    Nearly 20 U.S. states have started carrying out former president Barack Obama's Clean Power Plan, which places limits on carbon dioxide emissions from power plants in an effort to reduce the impacts of climate change. The plan has been in legal limbo (边缘) for the past year. Yet scientists have now calculated another outcome of the policy: harm to crop yields (产量) if the plan is cancelled. Along with carbon pollution, coal-fired power plants spew (喷出) pollutants that form what we know as smog. The contribution of smog to increased rates of asthma (哮喘) and premature deaths was already known. The new research estimates the extent to which smog, under air-pollution policies-4n place before the Clean Power Plan, would limit production in 2020 of four major crops: corn, cotton, potatoes and soybeans.

    Led by environmental engineer Shannon L. Capps, now at Drexel University, the team also sketched the extent to which those crop production losses would reduce under three nationwide scenarios (方案). One improved the efficiency of individual power plants. Another modeled a policy similar to the Obama plan, setting state CO₂ emissions goals for the electricity department. A third established a tax on carbon emissions, under which emissions fell the most. But the greatest drop in smog-forming pollutants—and greatest gains in crop yields—came from policies such as the Clean Power Plan.

    Researchers calculated how well each scenario would reduce the potential productivity loss (PPL) of each crop. PPL is a projected value for 2020 and indicates how much crop growth would suffer because of smog. Scenario 2 most closely agrees with results expected from the Clean Power Plan.

    For Canaan Elementary's second grade in Patchogue, N.Y., today is speech day, and right now it's Chris Palaez's turn. The 8-year-old is the joker of the class. With shining dark eyes, he seems like the kind of kid who would enjoy public speaking.

    But he's, nervous. "I'm here to tell you today why you should … should…"Chris trips on the "-ld," a pronunciation difficulty for many non-native English speakers. His teacher, Thomas Whaley, is next to him, whispering support."…Vote for …me …"Except for some stumbles, Chris is doing amazingly well. When he brings his speech to a nice conclusion, Whaley invites the rest of the class to praise him.

    A son of immigrants, Chris stared learning English a little over three years ago. Whaley recalls(回想起)how at the beginning of the year, when called upon to read, Chris would excuse himself to go to the bathroom.

    Learning English as a second language can be a painful experience. What you need is a great teacher who lets you make mistakes. "It takes a lot for any student," Whaley explains, "especially for a student who is learning English as their new language, to feel confident enough to say, 'I don't know, but I want to know.'"

    Whaley got the idea of this second-grade presidential campaign project when he asked the children one day to raise their hands if they thought they could never be a president. The answer broke his heart. Whaley says the project is about more than just learning to read and speak in public. He wants these kids to learn to boast(夸耀)about themselves.

    "Boasting about yourself, and your best qualities," Whaley says, "is very difficult for a child who came into the classroom not feeling confident."

    US inventor Thomas Alva Edison once said: "Genius is one percent inspiration and 99 percent perspiration." He was not exaggerating. Perspiration, indeed, plays a very important role in Chinese scientist Tu Youyou's success.

    Tu was given the Nobel Prize in Physio logy or Medicine in 2015 for discovering a new drug for malaria, a deadly disease caused by the bite of some types of mosquito. She is the first Chinese citizen to win a Nobel Prize in science. "It is the pride of the whole Chinese science community, which will inspire more Chinese scientists," China Daily noted.

    Malaria is a disease that infects around 200 million people and k ills about half a million people each year, according to the Economist. Tu's discovery has saved millions of lives, especially in the developing world. According to the World Health Organization, by 2013 malaria deaths had fallen by 47 percent compared with 2000.

    But the road to this achievement was a tough one to travel. In the late 1960s, during the "cultural revolution" (1966-1976), Tu joined a government project on which she began research on a new malaria drug.

    In the beginning, Tu read a lot of old folk remedies(药方), searched texts that w ere hundreds or thousands of years old and traveled to remote places.

    Over several months, Tu and her team collected over 600 plants and created a list of almost 380 possible remedies.

    "This w as the most challenging stage of the project," Tu told The Beijing News. "It was a very labor-demanding and dull job, in particular when you faced one failure after another."

    But the hard work and the dullness failed to break the team's spirit. In the following months, she and her team tested the remedies on malaria- infected mice and they found that an extract(提取物)from the plant qinghao seemed to work w ell.

    Not that the work was easier after that. The fact that the extract didn't always work against malaria discouraged some of her teammates. But Tu was ambitious to make a contribution to the world and so she encouraged her teammates to keep going. They decided to start again from the beginning.

    In 1971, they were rewarded for their efforts. After nearly 200 failures, Tu finally made an extract that was 100 percent effective  against malaria parasites.The extract was called "Artemisin in"(青蒿素).

    Thanks to decades of hard work, Tu and her team had "provided humankind with powerful new means to combat these diseases that affect hundreds of millions of people every year," said the Nobel Prize Committee. "It has greatly improved human health and reduced suffering."