Several times my daughter had telephoned to say, “Mum, you must come and see the daffodils(水仙花)before they are over.” I wanted to go, but it was a two-hour drive from Lake Arrowhead. "I will go next Tuesday," I promised, a little unwillingly, on her third call.

    The next Tuesday dawned cold and rainy. Still, I had promised, and so I drove there. When I finally walked into Carolyn's house and hugged and greeted my grandchildren, I said, "Forget the daffodils, Carolyn! The road is invisible (看不见的) in the cloud and fog, and there is nothing in the world except you and these children that I want to see!"

    My daughter smiled calmly and said, "We drive in this weather all the time, Mum. You will never forgive yourself if you miss this experience."

    After about twenty minutes, we turned onto a small road and I saw a small church. On the far side of the church, I saw a hand-lettered sign that read "Daffodil Garden."

    We got out of the car and each took a child's hand, and I followed Carolyn down the path. Then, we turned a corner of the path, and I looked up amazed. Before me lay the most beautiful sight. Flows of flowers of different colors seemed poured down the peak and slopes. There were five acres of flowers! A sea of daffodil! It was like a fairyland all beyond description.

    "But who has done this?" I asked Carolyn. "It's just one woman." Carolyn answered. "That's her home." Carolyn pointed to a well-kept A-frame house that looked small and modest in the midst of all that glory. We walked up to the house. On the patio (露台), we saw a poster." Answers to the Questions I Know You Are Asking" was the headline.

    The first answer was a simple one. "50,000 bulbs (鳞茎)" it read. The second answer was, "One at a time, by one woman." The third answer was, "Began in 1958."

    I thought of this woman whom I had never met, who, more than fifty years before, had begun one bulb at a time to bring the beauty and joy to the mountain top. Just planting one bulb at a time, year after year, had changed the world where she lived and created something of magnificence, beauty, and inspiration.

    When we multiply tiny pieces of time with small amounts of daily effort, we too can accomplish great things. Everyone can do something to change the world.

New App Helps People Remember Faces

    Large gatherings such as weddings and conferences can be socially overwhelming. Pressure to learn people's names only adds to the stress. A new facial-recognition app could come to the rescue, but privacy experts recommend proceeding with caution.

    The app, called SocialRecall, connects names with faces via smartphone cameras and facial recognition, potentially avoiding the need for formal introductions. "It breaks down these social barriers we all have when meeting somebody," says Barry Sandrew, who created the app and tested it at an event attended by about 1,000 people.

    After receiving an invitation to download SocialRecall from an event organizer, the user is asked to take two selfies and sign in via social media. At the event, the app is active within a previously defined geographical area. When a user points his or her phone camera at an attendee's face, the app identifies the individual, displays the person's name, and links to his or her social media profile. To protect privacy, it recognizes only those who have agreed to participate. And the app's creators say it automatically deletes users' data after an event.

    Ann Cavoukian, a privacy expert who runs the Privacy by Design Center of Excellence praises the app's creators for these protective measures. She cautions, however, that when people choose to share their personal information with the app, they should know that "there may be unintended consequences down the road with that information being used in another context that might come back to bite you."

    The start-up has also developed a version of the app for individuals who suffer from prosopagnosia, or "face blindness," a condition that prevents people from recognizing individuals they have met. To use this app, a person first acquires an image of someone's face, from either the smartphone's camera or a photograph, and then tags it with a name. When the camera spots that same face in real life, the previously entered information is displayed. The collected data are stored only on a user's phone, according to the team behind the app.

    Solar energy systems/power plants do not produce air pollution, water pollution, or greenhouse gases. Using solar energy can have a positive, indirect effect on the environment, when solar energy replaces or reduces the use of other energy sources that have larger effects on the environment.

    However, some poisonous materials and chemicals are used to make the photovoltaic (光电池的) cells that convert sunlight into electricity. Some solar thermal (保热的) systems use potentially hazardous liquids to transfer heat. Leaks of these materials could be harmful to the environment. U. S. environmental laws regulate the use and settlement of these types of materials.

    As with any type of power plant, large solar power plants can affect the environment near their locations. The placement of the power plant may have long-term effects on the habitats of native plants and animals. Some solar power plant-s may require water for cleaning solar collectors and concentrators or for cooling turbine generators. Using large volumes of ground water or surface water in some dry locations may affect the ecosystems that depend on these water resources. In addition, the beam of concentrated sunlight a solar power tower creates can kill birds and insects that fly into the beam.

    The amount of solar energy that the earth receives each day is many times greater than the total amount of all energy that people consume each day. However, on the surface of the earth, solar energy is a variable and irregular energy source. The amount of sunlight and the intensity of sunlight varies by time of day and location. Weather and climate conditions affect the availability of sunlight daily and on a seasonal basis. The type and size of a solar energy collection and conversion system determines how much of the available solar energy we can convert into useful energy.

The Ig Nobel awards are usually known as the "Igs" and are given out every year at around the same time as the real Nobel awards. The "Igs" are given for achievements that "make people laugh, and then make them think". The name "Ig Nobel" is a language joke. "Nobel" sounds like "noble" -- meaning "very honored". And Ig Nobel sounds like "ignoble" meaning the opposite of noble — that is, "not honored"

    According to Marc Abrahars, who co-founded the award in 1991, "Most prizes, such as Nobel Prize, reward the goodness of the people who receive them. These prizes are meant to honor the extremes of humanity-those whose achievements should be seen as very good."

    "The Ig Nobel Prize isn't like that. The Ig honors the great confusion in which most of us exist much of the time. Life is confusing. Good and bad get all mixed up. If you win an Ig, it shows that you have done something. What that thing is may be hard to explain. But the fact is, you did it, and have been recognized for doing it."

    The Nobel science prizes encourage us to think that all over the world great discoveries are being made that will do good to the whole world. But real science is not like that. The main job of science is to find out what is not true. This leads people into areas of research that seem completely senseless. Why did a team of Japanese scientists spend months trying to teach birds to enjoy the paintings of Picasso? Why did a Norwegian biologist start a project to encourage insects to drink beer? It is hard to say. But it won them all an Ig.

    Sometimes science tells us things that we don't want or need to know. We don't want to know that falling in love and going mad are exactly the same as far as the brain is concerned. And we don't really need to know that worrying about money can cause tooth disease. Only the Ig award brought these great achievements to our attention.

    Stepinac has become one of the first high schools in the country to drop all textbooks and replace them with a "digital library". When students started classes on Monday, they were zipping to an app on their tablets or laptops and bad instant access to all 40 texts in the Stepinac curriculum (课程).

    Dennis Lauro, director of an information center which provides technical support to public schools in New York, said neither he nor his colleagues were aware of a similar digital effort in a public school setting. "This is the wave of the future." Lauro said. "I'm not surprised that a private school would beat the public schools to it. They have the ability to just do it. There is so much politics involved in public schools, when it comes to a move like that, needing approval from boards and committees."

    For Tom Collins, Stepinac's president, the commitment to digital source material was not so difficult a decision. In the past, students' families had to spend up to $ 700 a year on textbooks. This year — after the one-time purchase of a tablet or laptop — families only need to pay $ 150. Using the digital library is almost as easy as opening a new book. A student can instantly lap into a digital book and open a map of Egypt or a speech by President John F. Kennedy. A teacher can show a page from a digital book on a whiteboard at the front of the class or send students a link to a particular math problem with notes added in.

    The first few weeks may bring some challenges. Stepinac officials expect some parental discomfort over dropping concrete books. They recognize there may be technical faults at first. And they will have to encourage students to leave space-eating photos and music off their tablets — and to keep their tablets charged.

    The weather affects many aspects of people's daily life. Knowing and understanding what the weather is doing is useful.

    However, the weather is also one of the most unpredictable elements in the world. Although many people watch the morning news and gather the information about the weather, this is often wrong. Whole days can be ruined by believing that the weather will be one thing, when it turns out to be another. However, owning wireless weather stations allows the owners to monitor the weather for themselves.

    Not only will these weather stations allow the owners to see what the weather is doing, but it is personalized(个性化)to them and their area. Wireless weather, stations are specifically prepared for the immediate neighborhood. Plans will be able to be made, and important decisions will no longer be ruined by bad weather.

    Although these weather stations are typically seen in homes, they can also be used very easily on farms and fishing boats. Both farmers and fishermen rely on the weather for their business and using up-to-date weather information is quite indispensable. By using the wireless weather stations, it can determine for them when to harvest crops and head back to the shore. Because of the size of the weather station, they can be moved very easily and used wherever necessary for people.

    The wireless weather stations are great for all homes, especially for areas that suffer from extreme weather conditions. The up-to-date, instant weather reports will allow a person to monitor what the weather is doing and if the bad weather is heading in their direction. Extreme weather tends to come very quickly; therefore, any information that is received is helpful.

    The weather stations are very simple to set up and are run by solar panels(太阳能板), ensuring they will work even if there is a power-cut. They are far smaller than those in previous years and give a couple of very simple read-outs for the owner. They are easy to use and fascinating to understand.