Since 2008, hunters have illegally killed more than 3000 rhinos in South Africa. The International Union for Conservation of Nature warns that rhinos may die out by 2026. People who hunt and kill illegally are called poachers. The most effective way to watch for and prevent illegal hunting is from the air. However, piloted flights are too costly. Fortunately, some Spanish college students have invented a drone (无人机) that can observe more places than a plane.

    Arnau Garcia is an aeronautical (航空学的) engineering student at the Polytechnic Institute of Catalonia, in Spain. He says observers from the air have trouble finding poachers when they hide under the trees. Mr. Garcia and other students have worked with the drone manufacturer HEMAV to help find the hidden poachers. They make it by using the thermal camera, which is especially sensitive to body heat. Even when the poachers keep still, it can also keep track of them.

    The drone can fly in the wind up to 55 kilometers per hour. It has an autopilot system, so it memorizes the flight path. The drone also has a microphone, a video camera and a GPS system. These permit it to report accurately where a picture is taken. After each flight, the drone can bring back detailed information about where rhinos are found, the conditions of water and plants in the area, and the positions of suspected poachers.

    Experts say the drone can fly as far as 70 kilometers from the base. It means that it could quickly observe large areas for poachers. However, the same search operation would take days for human observers. Thanks to the drone, many poachers have been caught and the number of rhinos is on the increase. In addition, HEMAV has received an increasing number of orders for the drone. Even South African national park officials attempt to fill the air with drones.

    Stress is an inevitable part of a busy and modern life. Time and time again, we see people feeling overwhelmed because of stress. But after years of being dosed up by doctors and seeking solutions on the self-help shelves, can most common complaints be cured through your next holiday? The festival doctor will see you now.

    Complaint

    Prescription（处方）

    Dosage(剂量)

    Guilty

    Restart yourself at the Wanderlust Festival

    A weekend at any Wanderlust Festival should restrain some of the shame you are feeling. Empty your mind with meditation (冥想) sessions in the mountains of America or adjust your feelings with a sound bath in Santiago, Chile.

    Sad

    A healthy dose of laughter at Just for Laughs in Montreal, Canada in July.

Have fun at the largest comedy festival, which attracts more than two million ha-ha hunters every summer. Apart from 250 comedy acts, there will be walkabout theater ,circus acts and lots of new comedy films to make you laugh to tears.

    Over- thinking

    Get nourishing food for your thought at the U.K.'s How the Light Gets In in May.

    Spend a week or so in the company of like-minded individuals and you will see you are not the only one over-thinking things. The world's largest philosophy festival, held in Hareous Wye, will have talks, debates and classes on culture, philosophy, politics, art and science.

    Heart-broken

    Find one of your favorite fish in the sea at Ireland's Matchmaking Festival in June.

    A week at Liverpool's Matchmaking Festival could be a choice as Ireland's mythical matchmakers have been pairing lovers together for centuries. Try to find Willie Dally, a fourth-generation matchmaker, for your best chance of everlasting love. Those who touch his lucky book are said to fall in love and marry within six months.

    Lions are the top tourist attraction to Kenya and also considered critically endangered. One of the main causes of their death is that people kill them in return for lions attacking their cows. “We put our cows in a small cow shelter at night,” locals said, “and that's when the trouble would start. Lions would jump in the shelter and kill the cows”.

    There have been a lot of efforts to try to protect the lions, but it's a crisis and everyone is looking for a solution. One idea was land leases(租用), another was lion-proof fences. However, no one even knew that Richard Turere, a 13-year-old Maasai from Kenya, had already come up with something that worked.

    One night Richard was walking around with a flashlight and discovered the lions were scared of a moving light. An idea was born. Three weeks and much repairing later, Richard invented a system of lights that flash around the cow shelter, mimicking a human walking around with a flashlight. His system is made from broken flashlight parts and an indicator box from a motorcycle. “The only thing I bought was a solar panel（电池板）, which charges a battery that supplies power to the lights at night.” Richard says. He calls the system Lion Lights.

    His simple solution was so successful: his neighbors heard about it and wanted Lion Lights, too. He put in the lights for them. From there, the lights spread and are now being used all around Kenya. Someone in India is trying them out for tigers. In Zambia and Tanzania they're being used as well.

    More than a hundred years ago, two boys were fishing in a small river. They sat in a heavy-bottomed boat, each holding a long, bent pole in his hands and eagerly waiting for "a bite". When they wanted to move the boat from one place to another they had to push against a long pole into the bottom of the stream.

    "This is slow work, Robert," said the older of the boys. "Yes, Christopher, and it's hard work, too." answered Robert. "I think there's some better way of moving a boat."

    Christopher advised rowing it and Robert promised to make some paddles (桨). The next day Robert's aunt heard a great noise in her house. The two boys were there, busily working. "What are you making, Robert?" she asked. He told his plan. His aunt laughed and said, "Well done! I hope you'll succeed."

    After much work, they succeeded in making two paddle wheels. They were very rough, but strong and usable. They fixed each of these wheels to the end of an iron rod (长杆) which they passed through the boat from side to side. The rod was bent in the middle. When the work was finished, the old fishing boat looked rather strange, with a paddle wheel on each side. The boys lost no time in trying it. One of the boys could guide the boat while the other turned the paddle wheels.

    That night when Christopher went home, he told his father a wonderful story. "Robert Fulton planned the whole thing," he said, "and I helped him make the paddles and put them on the boat." When Robert Fulton became a man, he didn't forget his experiment with the old fishing boat. He kept on thinking and working, until at last he succeeded in making a boat with paddle wheels that could be run by steam. He's now honored as the inventor of the steamboat.

    China's government has been trying all measures to reduce pollution in the past few years. Now people can enjoy a fresh environment everywhere. The following two graphs are adopted from the column of “City Information” on the webpage of Beijing Review.

Graph 1: Olympic Cities Air Quality Report

Graph 2: Chinese National Standard

Notes:

    API stands for Air Pollution Index(指数).

    Particulate matter (PM10) is a major component of air pollution that threatens both our health and our environment. It consists of very small liquid and solid particles floating in the air.

    Sulfur dioxide(SO₂) acts as an acid. Inhalation(吸入) results in labored breathing, coughing, or a sore throat and may cause permanent lung damage.

    The San Diego Center for Children recently added three acres of land to its 9-acre Linda Vista campus. Thanks to the efforts of Assembly member Dr. Shirley Weber, the state sold the land near the Center's main campus. Now the Center, which is the oldest children's nonprofit (非营利的机构) in the region, will be able to provide more treatment and educational foster care (看护) to kids and families who need it most.

    Jewish Family Service of San Diego (JFS) received a $10, 000 grant from the USS Midway Foundation to support its Hand Up Food Pantry (食品贮藏室). "Jewish Family Service works every day to help struggling families and individuals in San Diego move forward and build more stable, secure lives," says JFS CEO Michael Hopkins.

    St. Madeleine Sophie's Center raised more than $16, 000 at its Swing with Santa Golf Tournament (锦标赛). The funds will go toward programs for adults with developmental disabilities. The 5th annual tournament included 18 hotels, food and drinks, and two celebrity appearances: both Santa and Elvis made a dramatic entrance via helicopter.

    Coming Up: Raise money for the 4SRanch-Del Sur Community Foundation and Helen's Closet (壁橱，衣帽间) at the 9th Annual Thank You Run on Thanksgiving Day, November 22. Helen's Closet serves patients with ALS. The distance is 5K with a 1K Fun Run for children aged 8 and under.