A warm drink of milk before bed has long been the best choice for those wanting a good night's sleep. But now a study has found it really does help people nod off（打瞌睡）—if it is milked from a cow at night.

    Researchers have discovered that “night milk” contains more melatonin(褪黑激素), which has been proven to help people feel sleepy and reduce anxiety（焦虑）.The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder（奶粉） made from cows milked both during the day and at night. Those given night milk, which contained 10 times the amount of melatonin, were less active and less anxious than those fed with the milk collected during daytime, according to the study published in The Journal of Medicinal Food.

    Night milk quickened the start of sleep and caused the mice to sleep longer.

    While the effect of cow milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who have trouble falling asleep at night.

    Previous （以前的）studies have also showed that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.

    German engineers Gottlieb Daimler and Karl Benz built the first successful gasoline engines in 1885.After 1900, however, the United States became a leader in automobile production.

    The first cars were handmade and very expensive. Only people in rich cities could afford them. The first company to make gasoline cars in the U.S. was the Duryea Motor Wagon Company. Then, in 1901, Ransom E. Olds Began mass-producing his car, the Oldsmobile. In 1913Henry Ford made great strides in the mass production of cars by using an assembly line in his factory. Mass production meant that each car was less expensive to make. Now car ownership was affordable for the average person. By 1916there were more than one million cars in the United States.

    The automobile gave people the freedom to travel anywhere there were passable roads. Families that lived great distance apart could travel by automobile to visit each other. People could visit places they had never seen before.

    Before the mass production of cars, people lived close to work. Their means of transportation included walking, riding a bicycle, using a horse and carriage, or taking a train. The automobile gave people the ability to live farther away from work. The result was that gradually people moved out of the cities to the less crowded suburbs.

    The automobile industry created millions of jobs. The jobs were not just in the auto factories, where the cars were assembled. Workers were needed to make auto parts, run gas stations and repair shops, and work at new motels and restaurants that served people who traveled by car. Jobs became available at car rental companies. People were needed to build roads. These jobs and many others still exist because of the automobile.

    If you are in Dubai you may notice a robot police officer sharing the street with you. Your first thought might be, “Have I walked into a movie set？”

    The answer is no. That robot is Dubai's newest police officer. The robot has a touch screen instead of a gun. The robot will be employed mostly at shopping centers and other places popular with visitors.

    The robot's face has eyes but no mouth or nose. It stands 165 centimeters tall and weighs 100 kilograms. If the robot works well, Dubai says 25 percent of its police force could be robots by 2030. The robot cop(巡警) was officially presented at Dubai's Gulf Information and Security Expo and Conference in May.

    The police hope the robot will make life easier for the people of Dubai. Khalid Al Razooqi is Director General of Smart Services at the Dubai Police. He said the robot can help the public every day, and that “it won't ask for any sick leave”.

    The robot cannot make arrests (逮捕). But it can recognize faces and compare them to photographs on a criminal database. It can also sense emotions. People can use the robot's touch screen to do things like reporting a crime, paying fines and reporting lost or found things. They can also ask how to get somewhere. The robot can greet and shake hands with people. So far, the robot can speak Arabic and English. It soon will learn other languages such as Russian, Chinese, French and Spanish. In addition to having a touch screen, the robot has a camera that can live stream video to a police command center.

    Dubai has plans to add other kinds of robots to its police force. Within two years, the city plans to use a three meter tall robot that can run up to 80 kilometers an hour. The Dubai government says the machine would be the world's largest robot. A human police officer will be able to sit inside and control the robot. It will be able to lift heavy objects.

    The city also plans to use an egg shaped robot to control parking areas and give tickets to people who break traffic laws.

    Here are some must-know festivals from a handbook which you cannot miss in some Asia countries.

    Singapore Night Festival

    Aug. 17-25 The annual Singapore Night Festival is a celebration of the island nation's arts and cultural heritage (遗产). A highlight of the festival is the interactive light show that transforms the front of surrounding buildings into artistic wonders. http://www.nightfestival.com

    Royal Floria

    Aug. 25-Sep. 2 This year's event marks the 10th anniversary of the Royal Floria in Putrajaya, with more than 400,000 floral displays. Floral designers and landscape architects from 10 countries are set to show their talent with their arts and cultural creations. http://www.floriaputrajaya.com

    Tet Trung Nguyen

    Aug. 25 It is believed that during Tet Trung Nguyen (Ghost Festival), spirits of the dead return home in search of their loved ones. Vietnamese pay homage(敬意) to their ancestors during the festivals by preparing feasts as prayer offerings. http://www.vietnamtourism.com

    George Town Festival

    Aug. 4-Sep. 2 The George Town Festival was inaugurated(创立) in 2010 in conjunction with the city's designation as a UNESCO World Heritage site. It has become one of the region's important cultural festivals, showing myriad events that include musical performances, art exhibitions and film screenings taking place across multiple venues. http://www.georgetownfestival.com

    Here are some best sellers of 2018 at Amazon.

    The car

    Fourteen-year-old Terry's parents never pay him much attention. So when they both disappear after one of their all-too-frequent arguments, Terry isn't exactly eager for them to come home. On his own, he fixes an abandoned car. Though he doesn't know much about driving, he gets behind the wheel and heads west, with the intention of visiting an uncle in Oregon. It's an exciting and sometimes dangerous journey. Along the way, he learns a lot about people, about America——and most importantly, about himself.

    The Running Dream

    Jessica thinks her life is over when she loses a leg in a car accident.

    As she struggles to cope with her prosthesis(义肢)and many other difficulties, Jessica develops a close relationship with Rosa, a girl who has a cancer and sees right into Jessica's heart.

    With the support of family, friends, a coach, and her teammates, Jessica is able to run again. But that's not enough for her now. She doesn't just want to cross finish lines herself—she wants to take Rosa with her.

    Have a New Teenager by Friday

    Do you know this person?

    His bedroom looks like a garbage dump.

    She changes clothes three times before breakfast.

    It seems that he／she never agrees with you.

    Congratulations! You have a teenager in your home. But you needn't feel helpless. In fact, you're just five days away from your teenager asking.“ What can I do to help?” Internationally recognized family expert Dr. Kevin Leman will help you get real results—really fast.

    Boy Robot

    Seventeen-year-old Isaak discovers the truth about his origin: a government—made human. But a deadly military force is trying to kill him. He and the other Robots can only find protection from the Underground—a secret network of Robots and humans working together to ensure a coexistent future. Isaak must decide whether to hold on to his humanity and face possible death or to embrace his true nature in order to survive.

    If you are interested in any of the books, click here for further information:

    https://www.amazon.com/.

On August 1, 2023, new rules went into effect in the United States thạt make it against the law to sell most incandescent (白炽的) light bulbs.

Incandescent light bulbs have been common since the late 1800s. They use electricity to create light by heating a metal wire, which glows. Over 90% of the electricity used by the bulbs goes into making heat — not light.

Since 2005, countries around the world have been banning incandescent bulbs. That's what's happening in the US. The new rules don't actually make incandescent bulbs illegal. They just say that light bulbs that are sold must be able to create a certain amount of light (45 lumens) with a certain amount of energy (l watt). Most incandescent bulbs can only create about 15 lumen s with I watt.

These days, the best way to replace incandescent bulbs is with LED light bulbs. These bulbs can create about 75 lumens with 1 watt of electricity. And they can last 25 or more times longer than incandescent bulbs.

Though the rule just took effect at the beginning of August, it was first created in 2007. Since then, the rule has been delayed many times, usually for political reasons. In the early 2000s, LED bulbs cost more money than they do today, and weren't nearly as good. But in recent years, people have been switching over to LED lights, even without the rule. The lights have become more and more popular, since they use less energy and save people money by lasting longer.

The new rules will also help the environment. Over the next 30 years, LED bulbs are expected to help prevent a huge amount of pollution in the US — about as much as would be used by 28 million homes in one year. That will be an imperative step in tackling the climate crisis.