There is always something that happens in the world that everyone fears will happen to their town, city or country: natural disasters. The scariest part of it is that no one will ever see it coming. Though technology helps us prepare, but it never actually tells the people when it's going to hit. It is always estimated but the result is never 100% accurate.

    However, that is not the point of this article. Two different natural disasters in two different parts of the world have happened in the past few weeks. One was a major flood that has hit Louisiana in the United States. The other was an earthquake that hit Amatrice, Italy. However, there is a major difference in the news coverage of the two tragedies.

    As for the flooding in Louisiana, it is reported that this disaster is the worst to hit the United States since Super-storm Sandy and it'll cost at least $30 million. In only the first couple of weeks, 13 people had died. However, like me, many people did not hear about this tragic event. I did not learn about it until about three weeks after it happened.

    In Italy, however, it covered all media instantly. The earthquake in Italy happened on Tuesday morning. That same day, I was on Twitter and that was all that was over the news feed. Every other post was about the earthquake. Some would have the opinion that Amatrice, Italy was one of the most beautiful towns in that country. I got in deep sorrow because there were more people killed in this quake than the flooding. So far, they have a total of 73 dead and over one hundred missing.

    I understand that technically the earthquake in Italy was worse than the floods in Louisiana. However, I believe that if a natural disaster happens, they all should be equally covered and taken equally seriously. We are one world united and should be there for all of the people who are in need of help. We may not be able to accurately predict disasters but, we can surely lend a hand out for the needy.

    Everybody sleeps, but what people stay up late to catch or wake up early in order not to miss varies by culture？

    From data collected, it seems the things that cause us to lose the most sleep, on average, are sporting events, time changes, and holidays.

    Around the world, people changed sleep patterns thanks to the start or end of daylight savings time. Russians, for example, began to wake up about a half-hour later each day after President Vladimir Putin shifted the country permanently to "winter time" starting on October 26.

    Russia's other late nights and early mornings generally correspond to public holidays. On New Year's Eve, Russians have the world's latest bedtime, hitting the hay at around 3:30 a. m.

    Russians also get up an hour later on International Women's Day, the day for treating and celebrating female relatives.

    Similarly, Americans' late nights, late mornings, and longest sleeps fall on three-day weekends.

    Canada got the least sleep of the year the night it beat Sweden in the Olympic hockey (冰球) final.

    The World Cup is also chiefly responsible for sleep deprivation. The worst night for sleep in the U. K. was the night of the England-Italy match on June 14. Brits stayed up a half-hour later to watch it, and then they woke up earlier than usual the next morning. Thanks to summer nights, the phenomenon in which the sun barely sets in northern countries in the summertime. That was nothing, though, compared to Germans, Italians, and the French, who stayed up around an hour and a half later on various days throughout the summer to watch the Cup.

    It should be made clear that not everyone has a device to record their sleep patterns; in some of these nations, it's likely that only the richest people do. And people who elect to track their sleep may try to get more sleep than the average person. Even if that's the case, though, the above findings are still striking. If the most health-conscious among us have such deep swings in our shut-eye levels throughout the year, how much sleep are the rest of us losing?

    Ever wondered whether punishment actually makes people cooperate (合作)? A team of scientists created an experiment to figure it out and the results were pretty unexpected.

    To understand what they found, you have to know why these scientists were studying punishment. They were trying to figure out why people cooperate when it's often so easy to profit at others expense. Why don't friends steal from each other? Why do parents bother to feed their children? If the answer to these questions is obvious to you, congratulations, you are ahead of scientists. They're still trying to figure it out.

    In this experiment, researchers had 225 Chinese students play a game, where if the students cooperated, they'd all get a number of points. But if one defected (变节) and everyone else cooperated, the defector would get a lot of points, and the cooperators would lose out. This game represents a lot of real life situations where you struggle with a decision: work together and do OK, or run off with the rewards, ruining everybody else's day.

    This is actually a pretty ordinary economic experiment. But the researchers added two changes to see if they could mimic(糢拟)the real world better. Change one: some students played many rounds together, so they'd learn who they could trust. Change two: people could punish each other, sacrificing a point or two to destroy another player's score.

    In the end, the researchers found that playing multiple rounds made people cooperate more, which definitely mimics human society. But the whole punishment thing led to a surprise: punishing didn't actually make people cooperate more. In fact, it made them cooperate less.

    So the scientists still don't know why people cooperate, though it looks like it has more to do with groups sticking together than it does with punishment.

    All over the world people enjoy sports, Sports help to keep people healthy and happy, and to live longer.

    Many people like to watch others play games. They buy tickets or turn on their TVs to watch the games. Often they get very excited when "their" player or team wins.

    Some sports are so interesting that people everywhere go in for(参加) them. Football, for example, has spread(展开)around the world. Swimming is popular in all countries near the sea or in those with many rivers. What fun it is to jump into a pool or lake, whether in China, Egypt or Italy! And think of people in cold countries. Think how many love to skate or ski (滑雪) in Japan, Norway or Canada.

    Some sports or games go back thousands of years, like running or jumping. Chinese wushu, for example, has a very long history. But basketball and volleyball are rather new. Neither one is a hundred years old yet. People are inventing new sports or games all the time. Water-skiing is one of the newest in the family of sports.

    People from different countries may not be able to understand each other, but after a game together they often become good friends. Sports help to train(培养,训练) a person's character(性格,品格). One learns to fight hard but fight fair, to win without pride and to lose with grace(胜不骄，败不馁).

Africa's Most Amazing Places to Visit

    Pyramids of Giza, Egypt

    The most famous of the structures at Giza, near Cairo, the Pyramid of King Khufu was built around 2650 BC from 2.5 million blocks of stone. Its sides face north, south, east and west.

    Sahara Dunes, Morocco

    The most user-friendly part of the Sahara is accessible from the northern edge of Morocco. You can camp out in Tazzarine, where runners from all over the world complete the weeklong Marathon every spring. The foot of the Merzouga Dunes is the best location for gazing at stars, totally free of light pollution.

    Lake Retba (Lac Rose), Senegal

    There are few pink lakes in the world and one of them, Lake Retba, also called Lac Rose by locals is in the Cap-Vert peninsula in Senegal. The best times to see the lake at its pinkest is during Senegal's dry season, between November and June.

    Nyika Plateau National Park, Malawi

    With a plateau cut by numerous rivers that reach Lake Malawi by way of waterfalls off the eastern edge of the mountains, Nyika, the largest national park in Malawi, is one of the most beautiful in Africa. The eastern border of the plateau forms the wall of the Great Rift Valley. The great domes of hills have gentle slopes, making Nyika perfect for both hiking and mountain biking as well as Jeep exploration.

A study of 500,000 songs released in the UK between 1985 and 2015 showed that pop music had decreased in happiness and increased in sadness.

In a report published in the journal Royal Society Open Science, researchers at the University of California examined hundreds of thousands of songs and classified them by their mood. "‘Happiness' is going down, 'sadness' is going up, and at the same time, the songs are becoming more 'danceable' and more 'party-like'," co-author Natalia L. Komarova told The Associated Press.

The study found songs in 2014 like Stay With Me by Sam Smith, Whispers by Passenger and Unmissable by Gorgon City have a "low happiness" trend. However, tracks from 1984 like Glory Days by Bruce Springsteen, "Would I Lie To You?" by Eurythmics and "Freedom" by Wham had a "high happiness" trend. "The public seems to prefer happier songs, even though more and more unhappy songs are being released each year," the researchers wrote.

Apart from the emotional trends, researchers discovered that dances and pop were the most successful styles of music and that there was a "clear downward" trend, with the popularity of rock beginning in the early 2000s. "So it looks like, while the overall mood is becoming less happy, people seem to want to forget it all and dance," Komarova wrote in an email.

It was also found that the "maleness" of songs—the frequency of male singers in popular music-had decreased during the last 30 years. "Successful songs are characterised by a larger percentage of female artists compared to all songs," they wrote.

This discovery appears at a time when the conversation around sex equality in the music industry is at its height, with more male artists and songwriters.