From the loss of wildlife to rising sea levels, we're all well aware of the problems that climate change could cause.

    But while it may seem like such issues won't affect most of us directly，it looks like future generations could grow up without something that many of us now take for granted: chocolate.

    According to an essay published by the US National Oceanic and Atmospheric Administration, changes to the climate in the regions that produce cacao - the plant from which chocolate is produced - may mean that it will soon become extinct.

    Most of the world's cacao grows in countries close to the equator，with over half of it growing in the African nations of Ghana and Ivory Coast.

It's predicted that by 2050, climate change will have accelerated the rate at which temperatures in these countries rise, making it extremely difficult for cacao to grow there.

    The problem doesn't lie in increased heat, however，but in lower humidity (湿度)，as it's believed that rainfall will stay at the same level if the temperature rises.

    “In other words, as higher temperatures squeeze more water out of soil and plants, it's unlikely that rainfall will increase enough to offset the moisture (含水量) loss,” Michon Scott, the essay's author, wrote.

    To help fight this problem, researchers from Berkeley University in the US are working on changing the DNA of cacao plants to allow them to survive in dryer conditions by using gene editing technology, according to US News.

    In the meantime, US company Mars, one of the world's biggest manufacturers of chocolate products, announced in January that it would spend $1 billion to help reduce the effects of climate change.

    “This is a world issue, and it requires everyone to work together,” Mars spokesperson Barry Parkin told Business Insider.

    The message here is that if we all do our part, we may be able to prevent some of the worst impacts of climate change. Or if we're unlucky, chocolate will become a thing of the past.

    Who is the greatest teacher in Chinese history? Many people would think of Confucius, whose birthday was September 28. Although he lived over 2,000 years ago, people still remember and respect him for his contribution to the education today.

    Confucius lived in the Kingdom of Lu, which lies in Shandong Province. He lived during the Spring and Autumn Period. He had a hard childhood. His father died when he was only 3. His mother brought him up. As a child, he had to work to help his mother, but young Confucius didn't give up studying. He visited many famous teachers and learned music, history, poetry and sports.

    Later, he became a teacher and started the first public school in Chinese history. At that time only children from noble families could go to school, but Confucius believed everyone should go to school if they wanted to learn. He had about 3,000 students in his lifetime.

    Today, people still follow Confucius' lessons. He told us that we all have something worthy to be learned. “When I am with three people, one of them must be better than me in some areas. I choose their good qualities and follow them.”

    He also taught us that thinking is very important in study. “All study but no thinking makes people puzzled. All thinking but no study makes people lazy.”

    Confucius is not only a great teacher, but also a famous thinker with wise thoughts about the world and society. His most important teachings are about kindness and good manners. “A person should be strict with himself, but be kind to others.” he said.

    Audrey Hepburn(奥黛丽·赫本) won an Academy Award as Best Actress for her first major American movie, Roman Holiday, which was released in 1953. But she is remembered as much for her aid work as for her acting.

    Born in Belgium in 1929, Audrey's father was British and her mother was Dutch. Audrey was sent to live at a British school for part of her childhood. During World War II, she lived and studied in the Netherlands. Her mother thought it would be safe from German attacks. Audrey studied dance as a teenager and during college. But when she returned to London after the war she realized she wasn't going to be a ballerina (芭蕾舞女演员). So she began taking acting parts in stage shows. Late she began to get small parts in movies.

    But it was Audrey Hepburn's move to America in 1950s that brought her true fame. In 1951 she played the character “Gigi” in the Broadway play of the same name and received great critical praise. Two years later, Roman Holiday made her a star at the age of 24.

    Audrey Hepburn made more than 25 movies. Among her roles, the most popular one was Holly Golightly in Breakfast at Tiffany's in 1961. Three years later she played Eliza Doolittle in My Fair Lady.

    She was married two times and had one child with each husband. In 1989, the UN Children's Fund named Audrey a goodwill amassador. She travelled all over the world in support of UNICEF（联合国儿童基金会）projects. The UN agency said she was a tireless worker. She often gave 15 interviews a day to gain money and support for UNICEF projects.

    Audrey Hepburn often said her loyalty to UNICEF was the result of her experiences as a child during World War II. She said she knew what it was like to be starving and to be saved by international aid. She was a goodwill amassador until her death in 1993 from colon cancer.

    Have you ever thought of quitting your job when you feel exhausted? Maybe most of you would say "yes". After a particularly busy period at work, I decided to get away from it all by going on a hike in the mountains in southern France.

    Before I left, I read an interesting story in a magazine. It read, "Once, while I was riding on a crowded bus, the man sitting next to me threw his cell phone out of the window when his phone rang. I was surprised. He looked at me, shrugged (耸耸肩) and looked away. I had no idea whether it was his or stolen or whether he even knew what a cell phone was or not, but he clearly wanted to be free of it, because it clearly troubled him."

    Billions of people across the world use cell phones. Though cell phones are a wonderful way for communication, they often do the exact opposite. Using cell phones can increase stress within families and friends.

    So when I recently returned home, I got rid of my cell phone. Now I go outside without taking my phone with me. I've noticed things in my neighborhood I never noticed before, such as gardens. I've met new people, started conversations with neighbors I didn't speak to before and talked with some of my friends face to face instead of chatting over the phone.

    Instead of keeping me off from the world, stopping using my cell phone has helped me get even closer to my family and friends.

    Reading is the ability to process text, understand its meaning and to integrate it with what the reader already knows. Of all the reading skills speed-reading is a necessary skill in the Internet age. We skim over articles, e-mails and WeChat to try to grasp key words and the essential meaning of a certain text. Surrounded with information from our electronic devices, it would be impossible to cope if we read word by word, line by line. But a new trend calls on people to unplug and enjoy reading slowly, listing benefits beyond the intelligent stimulation.

    A recent story from The Wall Street Journal reported on a book club in Wellington, New Zealand, where members meet in a cafe and turn off their smartphones. They sink into cozy chairs and read in silence for an hour. Unlike tradition book club, the point of the slow reading club isn't exchanging ideas about a certain book, but to get away from electronic devices and read in a quiet, relaxed environment. According to The Wall Street Journal, the Wellington book club is just one example of a movement started by book lovers who miss the old-fashioned way of reading before the Internet and smartphones.

    Slow readers, such as The Atlantic's Maura Kelly, say a regular reading habit sharpens the mind, improves concentration, reduces stress levels and deepens the ability to sympathize. Another study published last year in Science showed that reading novels helps people understand others' mental states and beliefs, a fundamental skill in building relationships.

    Yet technology has made us less attentive readers. Screens have changed our reading patterns from the top-to-right, left-to-right sequence to a wild skimming and skipping pattern as we hunt for important words and information. Reading text punctuated with links leads to weaker comprehension than reading plain text. The Internet may have made us stupider, says Patrick Kingsley from The Guardian. Because of the Internet, he says, we have become very good at collecting a wide range of interesting news, but we are also gradually forgetting how to sit back, reflect, and relate all these facts to each other.

    Slow reading means a return to an uninterrupted, straight pattern, in a quiet environment free of distractions. "Aim for 30 minutes a day," advises Kelly from The Atlantic. "You can squeeze in that half hour pretty easily if only during your free moments, you pick up a meaningful work of literature," Kelly said. "Reach for your e-reader, if you like. Kindles make books like War and Peace less heavy, not less substantive, and also ensure you'll never lose your place."

    Central Park

    Explore Central Park, one of the largest city parks in the world and one of the most famous symbols of New York. Let's have a look at its main sights.

    Central Park is New York's largest city park and one of the biggest in the world, with an area of 843 acres (about 3.4km²). This park is home to man-made lakes, waterfalls, grass and wooded areas. You will also find the Central Park Zoo, among other attractions in this greenspace of New York.

    Besides being the city's primary green lungs, Central Park is also a favorite spot for many New Yorkers. It is perfect for sunbathing, going for walks, or doing any outdoor sports. Something that we found curious is seeing so many people running with their babies in prams (婴儿车).

    On Foot or by Bicycle

    To get to know some of the wildest parts of Central Park we suggest walking. However, to get a general feel for the whole park, the best thing to do is hire a bicycle and enjoy the scenery.

    If you decide to hire a bike, you will find lots of bike rental stores around Central Park that are not very expensive.

    Open Time

    From 7 a.m. to 10 p.m. on weekends.

    From 6 a.m. to 8:30 p.m. on weekdays.

    Price

    Entry to the Park is free. But if you visit some parts like Central Park Zoo, you need to buy a ticket.

    Transport

    Subway: Line 5, 6, 7, A, B, C and D.

    Bus: Line M1, M2, M3, M4 and M10.

    Nearby places

    Metropolitan Museum of Art (447 m)

    Guggenheim Museum (564 m)

    American Museum of Natural History (688 m)

    Whitney Museum of American Art (1 km)

    The Frick Collection (1.3 km)