Maybe you've heard about the saying, “A bird with a broken wing will never fly as high. I'm sure that T. J. Ware was made to feel this way almost every day in school.

    By high school, T. J. was the most famous troublemaker in his town. He got into lots of fights. He failed almost every exam but was passed on each year to a higher grade level. Teachers didn't want to have him again the following year.

    When I showed up to lead the first training for a leadership retreat, a program designed to have students become more involved in their communities, the community leaders told me about T. J. Ware, the boy with the longest arrest record in the history of town. Somehow, I knew that I wasn't the first to hear about T. J.'s darker side as the first words of introduction.

    At the start of the retreat, T. J, didn't readily join the discussion groups and didn't seem to have much to say. But when his group started a discussion about positive and negative things that had happened at school that year, he joined in and had clear thoughts on those situations, and the other students in his group welcomed his comments. Suddenly, T. J. felt like a part of the group, anti soon he was treated like a leader. He was saying things that made a lot of sense, and everyone was listening. By the end of the retreat he had joined the Homeless Project team. He knew something about poverty, hunger and hopelessness. The other students on the team were impressed (打动) with his ideas and love for the homeless. They elected T. J. vice-chairman of the team.

    Two weeks later, the Homeless Project team organized a communitywide service project—a giant food drive. Seventy students led by T. J. collected a school record: 2,854 cans of food in just two hours, enough to take care of poor families in the area for 75 days. The local newspaper covered the event with a full-page article the next day. T. J.'s picture was up there for doing something great.

    T. J. reminds us that a bird with a broken wing only needs mending. But once it has healed, it can fly higher than the rest.

    Prateek Sharma was born into a family of farmers. After 10 years of being a chief manager of Kotak Mahindra Bank, he did a good job and earned a good pay. But Prateek couldn't continue the corporation life with ease, as his heart was always in farming. So he worked as a banker on weekdays and on weekends travelled 100 km to get to his 5-acre in Dhaba Khurd.

    By the end of 2015, Prateek had set up a house on his farm to grow offseason vegetables. Prateek thought he'd quit his job once he was able to earn enough from farming, but this wasn't an easy decision to make. This was because costs to grow these vegetables were very high, along with the fact that farmers weren't a part of the value chain and thus couldn't decide the price of their own vegetables.

    Fortunately, Prateek met Vinay Yadav, another educated farmer. They then decided to start their own value chain and sell their vegetables and grains, while skipping the middlemen. The variety of vegetables they grew wasn't enough, so they decided to form a group of farmers.

    Once the plan was ready, the group was registered by the name of Farmer Producer Organization (FPO). However, the trial failed in the first year as most of the farmers were grain growers and had limited knowledge of growing vegetables. However, the largest reason was the switch to organic from chemical.

    Luckily, once the soil was used to organic methods, the next round of crops were successful and the FPO had a good amount of produce. So at the end of 2017, Prateek finally quit his job and devoted all his time to farming. Now he's successful and recently his team has started two farmer resource centers at Dhaba Khurd and Nathrula Canj.

Hidden London: the city's lesser-known delights Dulwich Picture Gallery

    As much an excuse to enjoy the village charm of Dulwich Village as to admire some delicate European masterworks,  this gallery is a southeast London charmer,  which was founded in 1811. Join a free guided tour to the permanent collection (3 pm Saturday and Sunday), catch the latest temporary exhibition and admire the lovely garden (open 1: 30 pm to 3: 30 pm Tuesdays).

Where: Gallery Rd SE21 7AD

Train: West Dulwich

Temple Church

    Featuring in the novel TheDaVinciCode and dating back to the late 12th century,  this is one of London's oldest and holiest medieval (中世纪的) treasures. Built by the Knights Templar,  the church is divided into the Round—which contains the statues of crusading knights,  who tried to recover the Holy Land from the Muslims in the Middle Ages—and the Chancel,  where the priests (牧师) and singers performing in church services sit.

Where: Temple EC4Y 7DE

Underground: Temple or Blackfriars

Chelsea Physic Garden

    Endlessly satisfying the green-fingered, the plain curious or those eager to discover botanical interests in central London, this delightful walled garden was founded by the Apothecaries' Society in the 17th century and is one of the oldest botanical gardens in London.

Where: 66 Royal Hospital Rd SW3 4HS

Underground: Sloane Square

Estorick Collection of Modern Italian Art

    Built between 1953 and 1958, the Estorick is Britain's only gallery devoted to Italian art. It draws together a fascinating collection of Futurist masterpieces from Umberto Boccioni, Giacomo Balla, Carlo Carra and others, who emphasized the importance of modern things, especially technology and machines.

Where: 39a Canonbury Sq N1 2AN

Underground: Highbury or Islington

    Sharpshooters refer to those who are skilled at firing a gun and accurately hitting what they are aiming at. However, some fish are also called amazing sharpshooters. People wonder how they hit their targets without using tools? By spitting! The fish shoot so accurately that they rarely miss their target.

    These amazing fish are archerfish (印度射水鱼).There are several different types of archerfish living in Southeast Asia. They spit at their dinner to catch it. To catch dinner, a fish first sets itself in a certain place, for example just below the surface of the water. It puts the tip of its mouth so it barely breaks through the water. Then, the fish waits for an unsuspecting insect to land on a leaf or branch hanging over the water.

    When an unsuspecting, or unknowing insect lands, the fish attacks. The fish squeezes its gill (腮)covers very rapidly, which forces water into the fish's mouth. In the roof of its mouth the fish has a groove (槽）. The fish forms the small groove and its tongue into a narrow tube by pressing its tongue up against its groove. The water forced into the fish's mouth is forcefully pushed out of the fish's mouth through the tube. Archerfish have been known to send a stream up to 5 meters (16 feet). However, archerfish can only shoot insects up to 1-2 meters (3-6 feet) away due to their limited accuracy.

    When the unsuspecting insect is hit with a sudden stream of water, it is knocked into or falls into the water. Once in the water, the insect becomes dinner. Archerfish learn how to spit when they are young. They get more accurate with practice. Adult archerfish rarely miss.

    Within a meter, archerfish will often spring out of the water and grab an insect in their mouths.

    Across Europe, where visitors can outnumber residents in the summer months, the complaints have started. Last week, in Barcelona, an open-top bus was spray-painted across its windscreen with the words “Tourism Kills Neighbourhoods”. The message is clear: such cities are under pressure. In tourists and residents' battle for shared spaces, local authorities are uncomfortably in the middle. The tourism is one of the largest employers in the world, with one new job created for every 30 new visitors to a destination—but at what cost to locals' quality of life?

    More people are travelling than ever before, and lower barriers to entry and falling costs mean they are doing so for shorter periods. The rise of “city breaks”—48-hour bursts of foreign cultures—has increased tourist numbers. “Too many people do the same thing at the exact same time,” says Xavier Font, a professor at the University of Surrey, “For locals, the city no longer belongs to them.”

    Compounding the problem is Airbnb, which has made tourists more casual in their approach to international travel, but added to residents' headaches. Those permanent citizens who share their apartment blocks with Airbnb hosts have lost their patience, “No longer do we have to share the streets with tourists, we have to share our own buildings!” To ease the congestion around the main attractions, many cities are taking immediate action. Venice is proposing a new concept of “detourism”: sustainable travel tips and alternative routes for exploring a different Venice. A greater variety of guidance for future visitors—ideas for what to do in off-peak seasons, for example, —can guide them from overcrowded landmarks. Repeat visitors have a better sense of the culture and it is much easier to integrate their behaviour with residents of the cities.

    “But the locals should learn to take tourists as a part of urban life. Tourists do not have to be considered passive players, but rather as visitors with rights and duties,” says Font, “Everyone has a part to play in promoting that change.”

    We can achieve knowledge either actively or passively. We achieve it actively by direct experience, by testing and proving an idea, or by reasoning.

    We achieve knowledge passively by being told by someone else. Most of the learning that takes place in the classroom and the kind that happens when we watch TV or read newspapers or magazines is passive. We are used to passive learning, and it's not surprising that we depend on it in our everyday communication with friends and co-workers. Unfortunately, passive learning has a serious problem. It makes us tend to accept what we are told even when it is little more than hearsay and rumor.

    Did you ever play the game Rumor? It begins when one person writes down a message but doesn't show it to anyone. Then the person whispers it, word for word, to another person. That person, in turn, whispers it to still another, and so on, through all the people playing the game. The last person writes down the message word for word as he or she hears it. Then the two written statements are compared. Typically, the original message has changed.

    That's what happens in daily life. The simple fact that people repeat a story in their own words changes the story. Then, too, most people listen to improve on it, stamping(打上标记) it with their own personal style. Yet those who hear it think they know.

    This process is also found among scholars and authors: A statement of opinion by one writer may be re-stated as fact by another, who may in turn be quoted by yet another; and this process may continue, unless it occurs to someone to question the facts on which the original writer based his opinion or to challenge the interpretation he placed upon those facts.