Let's look back all these years you've gone through, what have you done for your life? Are you spending your time wisely to make your life worthwhile? Neal Wu shared some ways we should do to make our short time of life meaningful, find out what you need to do next:

    a. Make friends as opposed to networking

    Your friends will go a lot further than the professional contacts you make, especially since only one of the two groups is invested in your personal happiness.

    b. Become an expert by learning as much as you can and deeply seeking out the things you are curious about

    Find the things you enjoy and practice the skills you want to develop. If you can achieve expertise then it will be easy to obtain an audience.

    c. Volunteer to help out those less fortunate

    In the process you will gain a ton of new perspective and will better understand other people's real problems. In a society that always looks upward, these people are being forgotten easily.

    d. Become as independent as possible

    Even though you work in a big company, you should constantly make small steps to reduce your dependence on your job. Write a book, build an app, or start a small business on the side. Release your inner entrepreneur.

    e. Don't spend too much time worrying about your personal brand

    Accomplish(完成) things, and the recognition will follow.

    f. Stop treating life as a competition and do things for their own sake

    Genuine(真正的) interest should be what drives you to improve yourself, rather than a desire to beat others. Find a community of people who are interested in the same things as you do, and drive each other to keep improving.

    Several times my daughter had telephoned to say, "Mum, you must come and see the daffodils (水仙花) before they are over."

    I wanted to go, but it was a two-hour drive from Lake Arrowhead. "I will go next Tuesday," I promised, a little unwillingly, on her third call.

    The next Tuesday dawned cold and rainy. Still, I had promised, and so I drove there. When I finally walked into Carolyn's house and hugged and greeted my grandchildren, I said, "Forget the daffodils, Carolyn! The road is invisible (看不见的) in the cloud and fog, and there is nothing in the world except you and these children that I want to see!"

    My daughter smiled calmly and said, "We drive in such weather all the time, Mum. You will never forgive yourself if you miss this experience."

    After about twenty minutes, we turned onto a small road and on the far side of a small church, I saw a hand-lettered sign that read "Daffodil Garden". We got out of the car and each took a child's hand, and I followed Carolyn down the path. Then, we turned a corner of the path, and I looked up amazed. Before me lay the most beautiful sight. Flows of flowers of different colors seemed poured down the peak and slopes. There were five acres of flowers! A sea of daffodil! It was like a fairyland all beyond description.

    "But who has done this?" I asked Carolyn. "It's just one woman," Carolyn answered. That's her home. "Carolyn pointed to a well-kept A-frame house that looked small and modest in the midst of all that glory. We walked up to the house. On the patio (露台), we saw a poster. “Answers to the Questions I Know You Are Asking" was the headline. The first answer was a simple one. "50,000 bulbs (鳞茎)" it read. The second answer was, "One at a time, by one woman." The third answer was, "Began in 1958."

    I thought of this woman whom I had never met, who, more than fifty years before, had begun--one bulb at a time--to bring beauty and joy to this remote mountain top. Just planting one bulb at a time, year after year, had changed the world where she lived and created something of magnificence, beauty, and inspiration.

    When we multiply tiny pieces of time with small amounts of daily effort, we too can accomplish great things. Everyone can do something to change the world.

    You eat food and drink water, right? Skipping Rocks Lab is changing how you and your future generations will have water. Have you ever thought you could eat water? Think again, this is actually happening somewhere in the world.

    The group at Skipping Rocks Lab has made a water bottle you can eat. The product is called Ooho. Unlike plastic bottles, Oohos are neither tall nor hard. They look more like bubbles, or small, round, clear balls. They can hold liquid inside. People who drink Oohos can be surprised: the outside bursts in the mouth.

    Rodrigo Garcia Gonzalez is with Skipping Rocks Lab. He explains that the outside, or the membrane, of Ooho is made of seaweed, a plant that grows in the ocean. “It's a membrane made of seaweed that can contain water or any kind of liquid. It's made from an extract (汁) of the brown seaweed.”

    The Ooho membrane is tasteless, and you can eat it. The company says even if you throw away the membrane, it will break down in about four weeks. Gonzalez says the membrane is strong, and good for the environment.

Every year, billions of plastic water bottles are thrown away, polluting land and waterways around the world. The typical water bottle made of plastic can take hundreds of years to degrade.

    Lise Honsinger is also with Skipping Rocks Lab. “Most people just grab a bottle of water, hold it for five minutes, drink it, and throw it away. How can that then exist for 700 years? So, yeah, this is absolutely a solution to that. We are very purist: we don't want to see this packaged in plastic.”

    There are limits to the Ooho. It cannot be refilled. Each bottle is small. And Oohos do not store for more than a few days. The Skipping Rocks Lab is working on those issues. “We're still working on things like extending the shelf life, looking at different options in terms of thickness, if we want to make one that stands up more, or more flexible for marathons where people just want to eat it whole.”

    Right now, Skipping Rocks Lab can make only a few thousand Oohos a day. But it is developing new technology that could increase that number to hundreds of thousands.

    I'm Caty Weaver. Kevin Enochs wrote this story. Anne Ball adapted it for Learning English. Kelly Jean Kelly was the editor.

Hot Air Balloons

    The basis of how the balloon works is that warmer air rises in cooler air. This is because hot air is lighter than cool air as it has less mass per unit of volume. Mass can be defined by the measure of how much matter something contains. The actual balloon has to be large as it takes a large amount of heated air to lift it off the ground.

    The burner uses propane gas to heat up the air in the envelope to move the balloon off the ground and into the air. The pilot must keep firing the burner at regular intervals throughout the flight to ensure that the balloon continues to the stable. Naturally, the hot air will not escape from the hot at the very bottom of the envelop as firstly, hot air rises and secondly, the floating power keeps it moving up.

    To move the balloon upwards, the pilot opens up the propane value which lets the propane flow to the burner which in turn frees the flame up into the envelope. It works in much the same way as a gas grill: the more you open the valve, the bigger the flame to beat the air and the faster the balloon rises.

    The “Parachute Valve” at the very top of the balloon is what is used to bring the balloon down towards the ground. It is a circle of fabric cut out of the top of the envelop which is controlled by a rope which runs down through the middle of the envelope to the basket. If the pilot wants to bring the balloon down, he or she simply pulls on the rope which will open the valve, letting hot air escape, decreasing the inner air temperature. This cooling of air causes the balloon to slow its rise.

    The pilot can operate horizontally by changing the vertical position of the balloon because the wind blows in different directions at different altitudes. If the pilot wants to move in a particular direction, he or she simply arises and falls to the appropriate level and rides with the wind.

    Rembrandt Harmenszoon van Rijn was one of the greatest artists of all time. He was born on July 15, 1606, in Leiden, Holland. Rembrandt began painting at an early age. At the age of 15, he traveled to Amsterdam to study art. But he soon returned home to paint on his own.

    Rembrandt's first paintings were of subjects from history. He used bright colors and shiny paints. These paintings were popular. Rembrandt became well-known in his community.

    In 1628, Rembrandt began to teach art. He was a respected teacher with many students. In 1632, Rembrandt again moved to Amsterdam. He began painting portraits (肖像) of many well-known people in Amsterdam. He soon became famous in Holland for his beautiful portraits.

    In 1634, he married a wealthy and educated girl named Saskia. She served as a model for many of his paintings. They moved into a large home where Rembrandt hung many of the paintings that he had collected. He enjoyed buying paintings by other artists.

    Rembrandt continued to succeed as an artist. But tragedy (悲剧) began to strike his family. Three of his four children died at a very early age. His wife, Saskia, died in 1642.

    Rembrandt became very sad. He began to paint with darker colors. But somehow, his painting grew even more beautiful. He used dark colors around the figures in his paintings. The figures themselves were painted as if a soft light were shining on them. One of Rembrandt's most famous paintings, The Night Watch, is from this period.

    Rembrandt began to paint more for himself and less for other people. Although his work was excellent, he was not able to make enough money to keep his house.

    Until he died on October 4, 1669, Rembrandt continued to paint. Rembrandt created over 600 paintings, 300 etchings (蚀刻画), and 1,400 drawings. Some of his most fascinating paintings were the portraits that he painted of himself. About 100 self-portraits leave a great record of his lifetime.

    As Internet users become more dependent on the Internet to store information, are people remember less？If you know your computer will save information, why store it in your own personal memory, your brain？Experts are wondering if the Internet is changing what we remember and how.

    In a recent study, Professor Betsy Sparrow conducted some experiments. She and her research team wanted to know the Internet is changing memory. In the first experiment, they gave people 40 unimportant facts to type into a computer. The first group of people understood that the computer would save the information. The second group understood that the computer would not save it. Later, the second group remembered the information better. People in the first group knew they could find the information again, so they did not try to remember it.

    In another experiment, the researchers gave people facts to remember, and told them where to find the information on the Internet. The information was in a specific computer folder(文件夹). Surprisingly, people later remember the folder location better than the facts. When people use the Internet, they do not remember the information. Rather, they remember how to find it. This is called "transactive memory (交互记忆)".

    According to Sparrow, we are not becoming people with poor memories as a result of the Internet. Instead, computer users are developing stronger transactive memories; that is, people are learning how to organize huge quantities of information so that they are able to access it at a later date. This doesn't mean we are becoming either more or less intelligent, but there is no doubt that the way we use memory is changing.