The year 3700, Earth is far too hot for any human to call it home. On this planet at least, man is nothing more than a memory--if there is anything left to remember the "wise man". But what about our wisdom--will any of it survive us?

    The conventional answer is no. Knowledge requires a knower, and there will be no knowing minds around then. But if information survives, perhaps in books or hard drives, maybe the knowledge isn't quite dead but dormant(休眠), ready to become alive with the help of other minds that develop over time or come to visit Earth in the distant future.

    At first sight, that seems to be reasonable: after all, we have done similar things with past knowledge. For example, we saved an ancient computer from a ship destroyed at sea off the southern coast of Greece, and succeeded in finding the meaning of Egyptian hieroglyphics(象形文字). Careful work can bring previously lost wisdom back to life.

    However, the key point is that there is a certain cultural continuity with those ancient times that allows us to reason and make progress in the dark: we know we are dealing with the legacy(遗产)of other humans. Without that link, the survival of objects and raw data doesn't guarantee the survival of knowledge. And a lack of continuity in language with any future intelligence would be a barrier. Knowledge is closely connected with language. When a language dies out, we can lose systems of reasoning that they contain. If that's lost, then it can't be recovered.

    All this means that other minds might not be able to fully make human knowledge alive when we are gone. It is better to concentrate on not dying out in the first place.

    Having a learning disability doesn't mean you can't learn, but you'll need some help and need to work extra hard. If you have a learning disability such as dyslexia or dyscalculia, remember that you are not slow or stupid.

    Learning disabilities can be genetic. That means they can be passed down in families through the genes. But kids today have an advantage over their parents. Learning experts now know a lot more about the brain and how learning works, and it's easier for kids to get the help they need.

    Dyslexia is a learning disability hat means a kid has a lot of trouble reading and writing. Kids who have trouble with math may have dyscalculia. Other kids may have language disorders, meaning they have trouble understanding language and understanding what they read.

    It can be confusing, though. What qualifies as “trouble" enough to be diagnosed as a learning disability? Reading, doing math, and writing letters may be tough for lots of kids at first. But when those troubles don't fade away and it's really difficult to make any progress, it's possible that the kid has a learning disability.

    Finding out you have a learning disability can be upsetting. You might feel different from everyone else. But the truth is that learning disabilities are pretty common. And if your learning specialist or psychologist has figured out which one you're facing, you're on the right track. Now, you can start getting the help you need to do better in school.

    But for this special help to really work, you'll need to practice the new skills you're leaning. It may take a lot of efforts every day. That can be a challenge, but you can do it Soon, you'll enjoy the results of all your hard work: more fun and success at school.

    Some people dream about becoming engineers. Luckily, the new IMAX film Dream Big shows how engineering can improve people's lives. It teaches viewers how engineers use high-tech to help the world. The film hits IMAX theaters nationwide on February 17 to celebrate Engineers Week.

    The film, taking place in locations like China, Dubai and Africa, tells the stories of engineers who try to come up with creative ideas to save energy and help people.

    Dream Big was directed by Greg MacGillivray who has 38 films under his belt, including some of the most successful films ever shown in IMAX theaters.

    How did MacGillivray get into the moviemaking business? “I grew up at the beach. My first movies were about surfing and the ocean. As time went on, I saw the changes in the ocean including polluting and overfishing. So I started making films about conservation of nature.” He told TFK. Now, his films cover a variety of topics, from the natural world to human creation.

    One of the engineers in Dream Big is Angelica Hernandez. In high school, she was on a team that best MIT, a university, in an underwater robotics competition. Today, the engineering work she does focuses on helping people use less energy and save money and resources. “I work with companies to promote energy efficiency with their commercial customers, so it's really trying to push forward all the measures that customers and high-energy users can apply, she explains.

    Engineering is such a good job-you make good money, travel around the world, solve amazing problems and help people.” She says.

    The mission of Dream Big is to show people the good that engineers can do to the world. “That was the impulse of making this movie”, MacGillivray explains, “We want to explain engineering in a way that will get the kids very excited about it.” “Whoever and wherever you are, you can become an engineer,” he adds, “All you need is the creative spirit.”

Los Angeles Could Be One Of The Few Cities The Olympics Can't Ruin

    In just the past several years, six cities—Boston; Rome; Stockholm; Hamburg, Germany; Krakow, Poland; and Oslo, Norway—have decisively rejected the idea of hosting the Olympics.

    The games' high costs, damaging effects on poor communities in the places that have recently hosted them have turned cities, against them—fostering the belief that "nobody wants to host the Olympic Games anymore."

    But Los Angeles is different. And on Wednesday, the Los Angeles City Council made final decision to try to get the chance to host the 2024 Olympics, taking the step Boston and many others never did. In LA, organizers promise they can hold an Olympics that stays within its $5.3 billion budget Organizers in every possible host city make the same promise. But when it comes to LA, where residents greatly support the plan, even people who doubt the Olympics believe that success in hosting the Olympics without any loss might be possible. "It's basically sound," said Smith College economist Andrew Zimbalist, who wrote the book on the financial risks the Olympics bring to cities and their taxpayers. "I think they'll be able to do it without any financial downside, although there is always some risk attached."

    There's another reason to believe LA could succeed: It's done it before. It last hosted the Olympics in 1984, when the Olympic turned a small profit. No host since has replicated that feat.

    The Los Angeles Coliseum, which was used for the 1932 and 1984 Olympics, will again serve as the place of the games, along with a new NFL stadium set to open in Inglewood in 2019. There's no need for a new Olympic village, thanks to dorms at UCLA. When LA announced its final three stadiums this month, chairman Casey Wasserman said proudly that a Los Angeles Olympics won't require any new construction—instead, it will rely entirely on already planned or temporary (临时的) places.

    Positive thinking is a significant element of happiness. In order to become a positive thinker, determination and consistency are important. The first thing to know about positive thinking is that everyone can do it.  With certain cognitive (认知的) and behavioral changes, we can all become positive thinkers. Another important factor is that being a positive thinker does not mean you become numb to anything that is not working properly in your life or is negative - it just means that you approach life and face challenges with a healthier outlook.

    Instead of selectively attending to negative events, focus on the positive ones. Then pay attention to the delayed consequences of your behavior rather than the immediate ones. For example, if a job is not going like you want, focus on the fact that you have a job and how you can take your time to make the situation better.

    Challenge any internal attributions and see if you compare your behavior to standards that are excessively rigid and perfectionistic. If so, change these and be reasonable with your comparisons. For example, if you constantly compare your weaknesses with other people's strengths, then switch this and compare yourself with those who are doing poorer than you as well. Overall, people who focus more on their strengths than their weaknesses but at the same time are aware of their weaknesses have a healthier self-evaluation result.

    When faced with too much fear about a situation, imagine the worst case and visualize a solution for it, then let go of fear. This way, you will be prepared for anything and your fear will not block you from being open and creative to different solutions. For example, if you are constantly worried about losing your job up to a point where it is creating a lot of anxiety and fear and is effecting your performance and your happiness negatively, then think of losing your job, visualize how you will handle it, find solutions in your mind and then let go of the thought and the fear attached to it.

    So positive thinkers are better problem solvers and have better interactions. In addition to that, people who are positive thinkers are happier and more satisfied with their life.

Plastic sludge (污泥) and garbage is a disaster for the world's oceans. A film crew traveled the globe to document the rubbish. And Julie Andersen of the Plastic Oceans Foundation says what we see is just the tip of the problem. "Half of the waste actually sinks to the bottom, and that remains on the surface actually breaks down. "

The filmmakers found rubbish in ocean gyres, the circulating currents that trap large concentrations of pollution in the Atlantic, Indian, and Pacific Oceans, home of what some have plastic. "What we found was a plastic smog that spread throughout all the water. And in some parts of the oceans, scientists have found more plastic than plant. "

The pieces of the plastic garbage infect the food chain, sometimes visibly，and more so at the microscopic level, where the plastic particles interact with other pollutants. "There are heavy metals, medicines, industrial waste in the sea, while they acts like magnets (磁铁). These poisonous substances absorb on the plastic, and then when seafood absorbs the plastics, those poisonous substances enter the fatty tissues. " To be consumed by other sea life and by people at last.

China, Indonesia, the Philippines, Thailand and Vietnam are the worst plastic polluters. The United States, although a leader in recycling, is one of the world's 20 since it produces and consumes so much plastic. There are efforts around the world to address the problem, including at this newly opened recycling center in Lebanon (黎巴嫩). But Andersen says there is more that people can do. "Cut back on single­use plastics, straws, plastic cups, plastic water bottles, plastic bags and find alternatives like reusable materials. " She says healthy oceans are essential to our survival.