Teachers' Day around the world is not celebrated on the same day.In some countries，Teachers' Day is celebrated on working days.However，in other countries，it is celebrated on holidays.

    Here we are giving you a list of countries that celebrate Teachers' Day on holidays.

China

    The Teachers' Day was proposed(提议)at National Central University in 1931.It was adopted(被采纳) by the central government of Republic of China in 1932.In 1939，the day was set on August 27，Confucius's birthday.People's Republic of China government called it off in 1951.It was reestablished in 1985，and the day was changed to September 10.Now more and more people are trying to celebrate the Teachers' Day back to Confucius's birthday.

India

    In India，Teachers' Day is celebrated on September 5，in honor of Dr Sarvepalli Radhakrishnan，the second President of India.Because his birthday was September 5th.At schools on this day，students in India celebrate this day to show their respect and love to their teachers.

Russia

    In Russia Teachers' Day is on October 5th.Before 1994，this day was set on the first Sunday of September.

USA

    In the United States，Teachers' Day is a holiday on the Tuesday of the first full week of May.

Thailand

    January 16 was adopted as Teachers' Day in the Thailand by a resolution(决议) of the government on November 21，1956.The first Teachers' Day was held in 1957.

Iran

    In Iran，Teachers' Day is celebrated on May 2nd every year.It is in honor of the famous Iranian professor Ayatollah Morteza Motahhari who died on May 2，1980.

    Although different countries celebrate Teachers' Day on different days，the activities people take to celebrate it just stay the same.

    Do you want to get home from work knowing you have made a real difference in someone's life?

    If yes, don't care about sex or age! Come and join us, and then you'll make it.

Position: Volunteer Social Care Assistant

(No Pay with Free Meals)

Place: Manchester

Hours: Part Time

    We are now looking for volunteers to support people with learning disabilities to live active lives! Only 4 days left. Don't miss the chance of lending your warm hands to help others!

Role:

    You will provide people with learning disabilities with all aspects of their daily lives. You will help them to develop new skills. You will help them to protect their rights and their safety. But your primary(首要的;主要的) concern is to let them know they are valued.

Skills and Experience Required:

    You will have the right values and great listening skills. You will be honest and patient. You will have the ability to drive a car and to communicate in fluent written and spoken English since you'll have to help those people with different learning disabilities. Previous care-related experience will be a great advantage for you.

    Dutch masters exhibition in Beijing

    The 17th century Dutch Golden Age had several significant artists and a range of great pieces produced during the period—including Jan Vermeer's Young Woman at Virginal, Jan Lievens' Boy in a Cape, and Turban and Rembrandt's Self-Portrait with Shaded Eyes.

    Some of the most refined examples of the time, including the three pieces mentioned above, will make their debut（首次亮相）in China as part of a world tour of The Leiden Collection.

    If you go:

9 a.m.-5 p.m., June 17-Sept 3 (closed on Mondays).National Museum of China, I Wusi Avenue, Dongcheng district. 010-6400-1476.

Ticket: 50 yuan ($7)

    The Age of Mechanical Reproduction

    The Age of Mechanical Reproduction, the latest exhibition at the Riverside Art Museum, features 41 artworks of US pop icon Andy Warhol, covering art installations, paintings and photographs. Warhol's well-known installation Electric Chair is a highlight of the show, which is also its debut in Asia.

    If you go:

10 a.m.-5 p.m., through August 28 (closed on Mondays).The Riverside Art Museum, Hongyan Road, Chaoyang district. 010-5309-2062.

Ticket: 60 yuan

Back with a bang

    Beijing-based hand Escape Plan will hold a concert in Beijing this weekend. The band is most famous for the song The Brightest Star in the Night Sky.

    If you go:

7:30 p.m., June 17.Beijing Worker's Gymnasium, Gongti Beilu, Chaoyang district. 400-610-3721.

Ticket: 280-980 yuan

Purple clay teapots

    Yixing purple clay potteries are a vital part of Chinese pottery culture and have been included in China's list of national intangible cultural heritage（国家非物质文化遗产）.A selection of more than 80 purple clay teapots will go on display at the Poly Art Museum starting Friday. The exhibit will include a range of delicate teapot works of Ji Yishun, Wang Xiaolong and Gao Lijun, who are all inheritors（继承人）the time-honored（历史悠久的）pottery handicraft.

If you go:

    9:30 a.m.-4:30 p.m.(closed on Sundays),through June 30.Poly Art Museum, New Poly Plaza,1 Chaoyangmen North Street 9.010-6500-8117.

Ticket: 20 yuan

    Women are friendly. But men are more competitive. Why? Researchers have found it's all down to the hormone oxytocin （荷尔蒙催生素）. Although known as the love hormone, it affects the sexes differently.

    "Women tend to be social in their behavior. They often share with others. But men lend to be competitive. They are trying to improve their social status," said Professor Ryan.

    Generally, people believe that the hormone oxytocin is let out in our body in various social situations and our body creates a large amount of it during positive social interactions （互动） such as falling in love or giving birth.

    But in a previous experiment Professor Ryan found that the hormone is also let out in our body during negative social interactions such as envy.

    Further researches showed that in men the hormone oxytocin improves the ability to recognize competitive relationships, but in women it raises the ability to recognize friendship.

    Professor Ryan's recent experiment used 62 men and women aged 20 to 37. Half of the participants（参与者）received oxytocin. The other half received placebo （安慰剂）.

    After a week, the two groups switched with participants. They went through the same procedure with the other material.

    Following each treatment, they were shown some video pictures with different social interactions. Then they were asked to analyze the relationships by answering some questions. The questions were about telling friendship from competition. And their answers should be based on gestures, body language and facial expressions.

    The results indicated that, after treatment with oxytocin, men's ability to correctly recognize competitive relationships improved, but in women it was the ability to correctly recognize friendship that got better.

    Professor Ryan thus concluded: "Our experiment proves that the hormone oxytocin can raise people's abilities to better distinguish different social interactions. And the behavior differences between men and women are caused by biological factors （因素） that are mainly hormonal. "

Instagram(图片分享社交应用程序)is about to take its biggest step toward removing likes from its platform. After months of testing an option to hide likes in select international markets, Instagram, which is owned by Facebook(FB), has already been testing hiding likes in seven other countries, including Canada, Ireland and Australia. For years, likes have been central to how celebrities, brands, politicians and everyday users experience Instagram and Facebook. It's a way of measuring popularity(名气) and success. But in recent months, Instagram has been rethinking how likes contribute to making its platform more toxic. Now it's considering a change.

The total number of likes on posts — which appear as hearts on the app—will disappear from Instagram's main feed, profile pages and permalink(永久链接)pages. The owner of the account can still see their own likes, but their followers won't know the count.

CNN Business previously spoke with users in countries with the test. The majority felt this move would improve well-being on the app. Instagram is the most harmful social networking app for young people's mental health, such as negatively influencing body image, according to one study.

But other users and psychologists said hiding likes won't fix everything. The test doesn't address some of the key ways that activity on Instagram can influence the well-being of users, including bullying(欺凌), feeling left out and thinking other people's lives are better than their own.

Renee Engeln, a psychology professor at Northwestern University, voiced his opinion that the biggest impact of Instagram is the content and the exposure to this constant stream of perfected images is what seems to hurt psychologically. Plus, users can still see their own likes—and feel badly if their posts don't perform well.

A 293-million-mile journey of the NASA Perseverance rover (探测器) to Mars: ended successfully on February 18, 2021, with a picture-perfect landing inside the Jezero Crater. The car-sized, six-wheeled rover, nicknamed Percy is the US space agency's biggest and most advanced explorer to date. Its primary mission is to search for signs of ancient microbial (微生物的) life on Mars.

Landing on Mars is extremely tricky. The Red Planet's gravitational pull causes approaching spacecraft to go faster to high speeds, while its thin atmosphere-just 1 percent that of Earth's-does little to help slow it down as it approaches the surface.

The scientists had to reduce Percy's 12,000 mph speed to a safe landing speed of less than five mph-in just six and a half minutes. The target entry angle also had to be a precise 12 degrees-any steeper, and the spacecraft would burn up; any flatter, and it would get lost in space. It is no wonder that the final approach is often referred to as the "seven minutes of terror. "

Upon attaining a manageable speed, Percy briefly flew over the Martian surface to seek out the perfect landing spot. Its complex map-reading system rapidly scanned the area and matched it with maps in its database to find the best location.

The NASA scientists will spend the next two months testing Percy's scientific instruments. Once ready, the rover will begin to carry out its mission.

"Perseverance is the smartest robot ever made, but confirming that microbial life once existed carries an unusually large burden of proof," said Lori Glaze, director of NASA's Planetary Science Division. "While we'll learn a lot with the great instruments we have aboard the rover, it may very well require the far more well-equipped laboratories and delicate instruments back here on Earth to tell us whether our samples (样本) carry evidence that Mars once harbored life. "