Your next Saturday night takeaway could be brought to you by a robot after a major food delivery company announced plans to use automated vehicles to transport meals. Europe's biggest online takeaway food company Just Eat has partnered with Starship Technologies to deliver food with robots on the streets of London later this month. “Nobody has ever done deliveries with land-based robots,” said Allan Martinson, the chief operating officer of Starship.

    The robot courier can travel up to 4 miles per hour for about 10 miles. It uses a GPS signal and nine cameras to navigate(确定方向). Instead of a person arriving at their door, customers could find themselves receiving a notification(通知) on their phone that says a robot is on its way and a code to unlock the automated courier. “Put the code in, the robot opens up, and there's your food,” said David Buttress, chief manager of Just Eat.

    The robot, which has so far been tested in Greenwich, Milton Keynes and Glastonbury, costs ￡1 to transport within 3 miles, compared with the ￡3 to ￡6 it costs for a human courier. To date 30 robots have driven nearly 5,000 miles without getting into an accident or finding themselves picked on by passers-by. They have driven in more than 40 cities around the world, including London and Tallinn, Estonia.

    An initial worry was how the public would react to robots. But Martinson said the public has been calm when passing the delivery machine on the streets. “The most surprising reaction has been the lack of reaction,” said Martinson.

    Another significant fear was that people would disrupt(扰乱) the robots, or try to steal them and their contents. To prevent this, the robot is fitted with nine cameras, two way audio, and movement sensors that send a warning if it is lifted off the ground. And it opens only with a pass code provided to the customer via a notification. “It's much easier to shoplift than it is to steal a robot,” said Martinson.

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    You get anxious if there's no wifi in the hotel or mobile phone signal up the mountain. You feel upset if your phone is getting low on power and you secretly worry things will go wrong at work if you're not there. All these can be called “always on” stress caused by smart phone addiction(上瘾).

    For some people, smart phones have freed them from the nine-to-five work. Flexible working has given them more autonomy (自主权) in their working lives and enabled them to spend more time with their friends and families. For many others, though, smart phones have become cruel masters in their pockets, never allowing them to turn them off and relax.

    Pittsburgh-based developer Kevin Holesh was worried about how much he was ignoring his family and friends in favor of his iPhone. So he developed an app — Moment — to monitor his usage. The app enables users to see how much time they're spending on the device(设备) and set up warnings if the usage limits are broken. “Moment's goal is to promote balance in your life,” his website explains. “Some time on your phone, some time off it enjoying your loving family and friends around you.”

    Dr. Christine Grant, an occupational psychologist at Coventry University, said, “The effects of this ‘always on' culture are that your mind is never resting, and you're not giving your body time to recover, so you're always stressed. And the more tired and stressed we get, the more mistakes we make. Physical and mental health can suffer.”

    And as the number of connected smart phones is increasing, so is the amount of data. This is leading to a sort of decision paralysis (瘫痪) and is creating more stress in the workplace because people have to receive a broader range of data and communications which are often difficult to manage. “It actually makes it more difficult to make decisions and many do less because they're controlled by it all and feel they can never escape the office,” said Dr. Christine Grant.

    A great white shark in a California aquarium attacked two soupfin sharks(翅鲨), causing their deaths. The attack was not a natural action for food, but a kind of response when the two sharks swam too close to the great white. The great white didn't attacked other fellows, but the officials had to move other soupfin sharks to another tank(贮水池)for their safety.

    These attacks had given rise to calls for the freedom of the 88-pound, 5-foot-3- inch shark. The aquarium housed the shark in a huge tank. However, according to experts, the tank was not big enough for the shark. Its nose was bloody from striking the glass of the aquarium. Great white sharks in the wild had a big amount of migration, sometimes traveling 50 miles a day. Because the shark was still young, there was possibility of his growing. As it grows, it can became more troubled in the limited space.

    Aquarium officials said that keeping the shark in the aquarium allowed them to study their behavior that they cannot study with free great white sharks. When they studied behavioral patterns, scientists believed that they can help great white sharks in the wild.

    Since the shark had been on display, the number of people who visited aquarium increased greatly. The one-year-old shark was the longest surviving great white living here. It had been at the Monterey Bay Aquarium for six months. Other great whites did not survive for longer than 16 days in the aquarium.

    Petra and Wadi Rum, Jordan

    When it comes to the world's wonderful desert scenery, Jordan's Petra and Wadi Rum has it. Also known as the Valley of the Moon, this place is one of the best due to its amazing desert canyons (峡谷) and rock walls. Participants love exploring its Burdah and Um Fruth, walking to the impressive ancient city.

Kilimanjaro, Tanzania

    The Rongai Route is the best route if the participants of the walking tour want a quiet climb. The Kili Trail permits travelers to witness the region's wilderness, virgin forests, and rare animals. This route, according to many, is the easiest way to reach the top where the breath-taking 360-dcgree sights of natural wonders await.

    Quebec, Canada

    This special environment made up of both the natural and cultural treasures, where fresh water becomes one with the tides (潮汐) of the sea, makes Quebec one of the interesting walking tour destinations in the world. Here is a track that heads to the Saguenay Fjord National Park which is included in the UNESCO World Heritage Site. Adding to the beauty of Quebec are its sparkling waterfalls, inviting lakes, and rare animals.

    Great Smoky Mountain, US

    This region has been named as the ancestral home of the Cherokee Indians, where rich natural wonders combined with interesting history are the major happenings. The rich natural reserve is evident and enjoyed by walking tour participants. What also makes this destination a popular choice is its reputation as the biggest wilderness on the eastern part of the United States.

    There are some very good things about open education. This way of teaching allows the students to grow as people, and to develop their own interests in many subjects. Open education allows students to be responsible for their own education, as they are responsible for what they do in life. Some students do badly in a traditional classroom. The open classroom may allow them to enjoy learning. Some students will be happier in an open education school. They will not have to worry about grades or rules. For students who worry about these things a lot, it is a good idea to be in an open classroom.

    But many students will not do well in an open classroom. For some students, there are too few rules. These students will do little in school. They will not make good use of open education. Because open education is so different from traditional education, these students may have a problem getting used to making so many choices. For many students it is important to have some rules in the classroom. They worry about the rules even when there are no rules. Even a few rules will help this kind of students. The last point about open education is that some traditional teachers do not like it. Many teachers do not believe in open education. Teachers who want to have an open classroom may have many problems at their schools.

    You now know what open education is. Some of its good points and bad points have been explained. You may have your own opinion about open education. The writer thinks that open education is a good idea, but only in theory. In actual fact, it may not work very well in a real class or school. The writer believes that most students, but of course not all students, want some structure in their classes. They want and need to have rules. In some cases, they must be made to study some subjects. Many students are pleased to find subjects they have to study interesting. They would not study those subjects if they did not have to.

    Wondering what to see and do in India in November? November is an excellent month to visit India. Here are the best festivals in November, 2018 in India.

    International Yoga and Music Festival

    Organized by Nada Yoga School every year since 2008, the International Yoga and Music Festival features 50 of the best professional yoga teachers Ayurvedic（印度草药按摩）doctors， dancers, musicians, and philosophers from Rishikesh and abroad. Free classes and lectures are held with topics including yoga, Ayurveda, philosophy, and Indian classical music. There's an Indian classical music concert in the evenings as well.

    Time: November 1-7, 2018. Location: Rishikesh, Uttarakhand.

    Wangala Festival

    Also known as the 100 Drum Wangala Festival this is the biggest harvest festival of Meghalaya's Garo tribe in northeast India. Held in honor of the Sun God of fertility, the festival marks the end of the seeding season and agricultural year. It's celebrated by the beating of drums, blowing horns, and traditional dancing.

    Time: November 6, 2018. Location: Garo Hills, Meghalaya. Bandra Wine Festival

Being popular with local people for six years, the Bandra Wine Festival is a fun opportunity to sample the best wines in India. In addition to tasting wine, there are market stalls, food stalls, live music in the evenings, and dancing.

    Time: November 7-8, 2018.

    Location: D'Monte Park, Bandra West, Mumbai.

    Pushkar Balloon Festival

    The International Hot Air Ballooning Festival is an added attraction at the Pushkar Camel Fair. Similar to the Taj Balloon Festival in Agra, it's hosted by Sky Waltz, and features hot air balloons from around the world and a Night Glow Music Concert. Accommodation and balloon flight packages are offered to visitors.

    Time: November 21-23, 2018. Location: Pushkar, Rajasthan.