Many of the world's famous cities are known by some special names. Paris is known as the "City of Light". Hong Kong is the "Wall Street of Asia". One small city in Pennsylvania may be the sweetest place on Earth. That is town of Hershey, which is known as the "Chocolate Town". It is named after Milton Hershey, the founder of the largest chocolate factory in the world.

    Milton Hershey built his first candy factory in the early 1900s. At the time, Hershey was developing a technique for milk chocolate. Eventually he succeeded. Hershey was also the first to produce individually wrapped chocolate bars. His factory grew and produced more and more types of chocolate. To this day, Hershey's chocolate factory is the largest in the world. Hershey used his success to give back to the community. He built a town around the factory for his employees. He gave streets fun names like Chocolate Avenue. He built schools, parks and shops. This generous man gave millions of dollars to charity. He built an amusement park with rides, trains for children and a swimming pool. Over the years, the town grew. People from near and far came to visit this special town, whose beauty and fame continue to attract lots of tourists. Every year close to three million tourists visit the Chocolate Town.

    Today visitors to the city can enjoy a variety of attractions and activities. The Hershey chocolate factory offers tours. Visitors can learn all about chocolate and how it is made. A gift shop sells all kinds of chocolate and toys made to look like chocolate. Even if you don't buy a souvenir, there is one thing that is impossible to forget: the wonderful aroma of fresh chocolate everywhere. In this special place even the streetlights are shaped like chocolate.

    Another attraction is the Hershey Hotel. It has an unusual mineral spring where guests can enjoy a variety of special treatments. The treatments all have one thing in common: chocolate.

    I still clearly remember that day. I was on the side of the road for about four hours with my big jeep. I put signs in the windows that said,“Need a jack (千斤顶）.”

    As I was about to give up, a truck stopped and a man got off. He looked at the situation, made a judgment and went back to take a jack. After about two hours, we finished the job with sweats. We were both dirty. His wife took a large bottle of water for us to wash our hands.

    I tried to put $20 in the man's hand, but he wouldn't take it, so I went to give it to his wife quietly. I asked their little girl where they lived. She said they lived in Mexico. They were in Oregon now, so Mommy and Daddy could pick cherries for the next few weeks. After that, they were going to pick peaches and then go home.

    After I said goodbye and started going back to my jeep, the girl ran to me and handed me a tamale(玉米粽子)for lunch. I thanked them again and walked back to my jeep. When I opened the tamale, what did I find inside? My $20! I ran to the truck and the guy rolled down his window. He started shaking his head, smiled and  said in English“Today you, tomorrow me. ” Then he drove away, with his daughter waving to me from the back.

    This family, working on a seasonal basis where time is money, took a couple of hours to help a stranger while others passed by quietly.

    Since then I've helped many people like the Mexican family. I didn't accept their money. Every time I was able to help, I felt as if I was putting something in the bank.

Welcome to the Kids' Science Challenge!

    Do you like science projects and winning some awesome gifts? This is the challenge for you. What's even better is that you don't have to build anything--simply come up with an original idea or design that relates to one of three topics given below.

Wonderful Sounds

    Ready for Wonderful Sounds? Click on Science Secrets to meet our sound specialist. And be sure to download fun activities with crazy new sounds and musical instruments in the Dig In section! Now what kind of new musical instrument can you invent?

Super Material for Sports

    Ready for Super Material for Sports? You'll discover the amazing world of Materials Science, where scientists and engineers develop new materials for everyday functions--like sports! Click on Science Secrets for information about our scientist. And don't forget to download the fun activities in the Dig In section! Now can you come up with a new sports material that would help you play your favorite sport?

Magical Microbes

    Ready to discover Magical Microbes, the tiniest living things on earth? Click on Science Secrets for information about our scientists. And be sure to download all the fun activities in the Dig In section! Now can you think of a brand new way that microbes can help people?

    For Zack, the shave was more than just a way to fund lifesaving research. It was a way to honor his late brother, Taylor Frink.

    Taylor, a volunteer firefighter in North Carolina, was killed in a car accident last September. Before his passing, Taylor was an eager supporter of St. Baldrick's. He went bald（秃头）for the cause in 2015, supporting kids with cancer and raising money to find cures.

    As a local hero, Taylor was beloved by the community. When he died, more than 1, 000 people attended his funeral to pay their respects. Zack looked up to his brother and this was the reason why he decided to become a junior firefighter himself. They did everything together. Zack remembers.

    Zack knew his brother had planned to shave again in 2016, so without hesitation he decided to fill his shoes and registered to shave at the local St. Baldrick's event in Kinston, N. C.

    “He was always goodhearted, and I want to make my brother proud,” shares Zack.

    As part of Zack's kindnesses, he raised more than $ 1,000 for the St. Baldrick's Foundation primarily by selling T-shirts he designed. Leading up to the event, Zack also visited his city council, commissioner's office and challenged the local official department to get involved.

    “We are not going to let Taylor's name be forgotten. That is what I love about St Baldrick's,” says Jean Culbreth, volunteer event organizer. “Zack gets it. He gets that what he is doing is keeping his brother's name alive.”

    The day finally came and Zack took his seat under the clippers (剪具), not only to honor his brother but to help kids with cancer. It was a special moment for all, and by the end of the day the event had raised more than $ 22,000!

    Losing a wallet is one of those careless acts most of us have come across, at some point or the other in our lives. While most of us tend to move on after mourning over the lost necessities, there are a few lucky ones who get them back, with the help of the police or the generosity of the person who finds it.

    And then there is Hunter Shamatt, who not only got back his wallet but with some added happiness that was tagged along!

    Hunter was on his way to attend his sister's wedding on a Las Vegas-bound flight when he realized that he has misplaced his wallet, sometime during the journey. Hunter's family reached out to the Frontier flight to enquire if someone had handed it over to them. Unfortunately, there was no sign of the missing wallet.

    But wait. The story was far from over. Just a week after Hunter's sister's wedding, he received a package in his mail. And guess what? There was his wallet! Surprisingly, the wallet was not the only thing that was inside the package. It also had a handwritten note for Hunter which turned out to be a bonus! The piece of paper read,

"Hunter, Found this on a Frontier flight from Omaha to Denver — row 12, seat F wedged between the seat and wall. Thought you might want it back. All the best.

P.S. I rounded your cash up to an even $100, so you could celebrate getting your wallet back. HAVE FUN!!!"

    Moved by the touching gesture, Hunter's mom, Jeannie Shamatt, decided to write a post on Facebook giving a detailed description of the incident. She also urged everyone to share the post as she would like to meet and greet the person behind the act of kindness, personally.

    Now, thanks to the astonishing power of social media, the post finally reached the man behind the note. The man was identified as Todd Brown and it was one of his co-workers who made sure Jeannie Shamatt's post reaches his colleague. Jeannie turned to Facebook again to thank Brown and his family for restoring her faith in humanity.

    "I try to teach my children to do the right things in life, help people when you can regardless of the outcome. This story is more about restoring faith in people than anything. We hear a lot of bad news but not enough good news. I personally want to thank Todd Brown and his wife for restoring faith that there are amazing people out there."

    If you wear glasses, chances are you are smarter. Research published in the famous British journal Nature Communications has found that people who displayed higher levels of intelligence were almost 30 percent more likely to wear glasses.

    The scientists studied the genes of thousands of people between the ages of 16 and 102.The study showed intelligence can be connected to physical characteristics. One characteristic was eyesight. In out of 10 people who were more intelligent, there was a higher chance they needed glasses. Scientists also said being smarter has other benefits. It is connected to better health.

    It is important to remember these are connections which are not proven causes. Scientists call this correlation. Just because something is connected to something else does not mean one of those things caused the other. And it's worth noting that what constitutes intelligence is subjective and can be difficult, if not impossible, to measure.

    Forget genes though. Plenty of proof shows wearing glasses makes people think you are more intelligent, even if you do not need glasses. A number of studies have found people who wear glasses are seen as smarter, hard-working and honest. Many lawyers use this idea to help win their cases. Lawyer Harvey Solves explained this. Glasses soften their appearance. He said sometimes there has been a huge amount of proof showing that people he was defending broke the law. He had them wear glasses and they weren't found guilty.

    Glasses are also used to show someone is intelligent in movies and on TV. Ideas about people who wear glasses have begun to shift. People who do not need glasses sometimes wear them for fashion only. They want to look worldly or cool. But not everyone is impressed by this idea, though. GQ magazine said people who wear glasses for fashion are trying too hard to look smart and hip (时髦的). However, that hasn't stopped many celebrities from happily wearing glasses even if they do not need them. Justin Bieber is just one high-profile fan of fashion glasses.