Whether you are young or young at heart, it is never too late to change, or take in some new and better practices into your daily life. Here are some wise lessons that I wish I knew when I was younger.

    I used to be worried about what others thought of me. Finally, I changed. Remember that if you're wasting too much time looking for respect(尊重) from others, then you will not have time to finish all you desire(期望).Everyone has an opinion, but in fact others' opinions about you are based more on their history and perceptions(观念) than anything you're actually doing. So depend on your own assessment(评估) of you rather than others'.

    Enjoy every moment of today. Don't wait to do or enjoy anything. Don't tell yourself you will do it tomorrow. If it is important to you, then do it today. Pay attention to what is happening now, the task at hand and all the choices you make today, big and small. Our future is set by what we decide and do today.

    What happened yesterday is over. You can not change it. So let it go. Don't waste your energy considering anger or unhappiness. It only stops you from moving forward in life.

    Look for the good in people. Celebrate the happy moments, big and small. Search for the chances for growth. Give helpful encouragement rather than unwanted criticism (批评). Be helpful whenever possible.

    In a word, life is serious but you can still be delighted and hopeful. Otherwise, what's the point?

    Whether in the home or the workplace, social robots are going to become a lot more common in the next few years. Social robots are about to bring technology to the everyday world in a more humanized way, said Cynthia Breazeal, chief scientist at the robot company Jibo.

    While household robots today do the normal housework, social robots will be much more like companions than mere tools. For example, these robots will be able to distinguish when someone is happy or sad. This allows them to respond more appropriately to the user.

    The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn't just deliver general answers to questions; it responds based on what it learns about each individual in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.

    Social robots are not just finding their way into the home. They have potential applications in everything from education to health care and are already finding their way into some of these spaces.

Fellow Robots is one company bringing social robots to the market. The company's “Oshbot” robot is built to assist customers in a store, which can help the customers find items and help guide them to the product's location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.

    The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not intended to replace workers, but to work alongside other employees.“We have technologies to train social robots to do things not for us, but with us,” said Breazeal.

    Do you often dream at night? How do you feel when you dream? Is it useful to our health? “Dreams may be more important than sleep, and we all need to dream,” some scientists say.

    Dreams take up about one quarter of our sleeping time. People have several dreams each night. Dreams are like short films. They are usually in colour. Some dreams are like old films. They come to us over and over again. That may be because the dreamer is worrying about something. Dreaming may be a way of trying to find an answer. Some people get new ideas about their work from dreams. They may have been thinking about their work all day. These thoughts can carry over into dreams.

    Sometimes we wake up with a good feeling from a dream. But often we can't remember the dream. Dreams can disappear quickly from memory.

    Too much dreaming can be harmful. The more we sleep, the longer we dream. The mind is at work when we dream. That is why we may have a long sleep and still wake up tired.

    The day will come when renewable energy such as wind, solar, geothermal and others replace fossil fuels as the major source of world energy. However, most analysts insist that this day will not arrive for many decades to come—certainly well past the middle of the century. Systems of fossil fuels have already been firmly set up, and it is too costly or impractical to replace the existing systems with renewables. But there are good reasons to believe that the transition (转变) to renewables will come much faster than previously thought.

    It is hardly surprising that many experts say we will see a relatively slow transition from fossil fuels to renewables, given what is known about previous energy changes of this sort. "Energy transitions take a long time," observed Vaclav Smil of the University of Manitoba in Scientific American. It took more than 50 years for coal to replace wood as the world's leading source of energy and another 50 years for oil to replace coal; the change from fossil fuels to renewables, he argued, is not likely to come any faster.

    Under ordinary circumstances, Smil's forecast would no doubt prove accurate. But these are not ordinary times. Growing concern over climate change is leading to increasingly strict controls on CO₂ and other greenhouse gas (GHG) emissions (排放), while the development in renewables technology is lowering their price and speeding their installation.

    There are, of course, many difficulties in the effective control of carbon emissions, as demonstrated by coal companies to block the introduction of new rules by the US Environmental Protection Agency. Nevertheless, it is impossible to dismiss the progress being made at the local and international levels to promote the use of renewables. The European Union (E. U), for example, is well on the way to achieving a 20% reduction in GHG emissions from 1990 levels by 2020, along with a 20% increase in the use of renewable energy.

    The transition to renewables will be faster due to dramatic improvements in the pricing and performance of such systems. As a result of the steady increases in the efficiency of wind and solar systems, together with the savings achieved through large-scale manufacture, the price of renewables is falling globally. With prices dropping this fast, solar energy is now proving competitive with fossil fuels for generating electricity in many areas.

    The change from fossil fuels to renewable energy will not come overnight, and it will not escape many setbacks. Nevertheless, renewables are likely to replace fossil fuels as the main source of electrical power well before mid-century.

    Brian Hamilton's life changed in a prison when he was accompanying his friend, Reverend Robert J. Harris, who often went to local prisons to do his work. During the visit, Hamilton started talking to one of the prisoners and asked what he was going to do when he got out.

    "He said he was going to get a job," Hamilton recalls(回忆). "I thought to myself, wow, that's going to be difficult with a criminal background."

    The conversation made Hamilton consider how prisoners could benefit from entrepreneurship, something he thought about for years. Finally in 2008, 16 years after that initial conversation, Hamilton created Inmates to Entrepreneurs, a nonprofit organization that helps people with criminal backgrounds start their own small businesses. "Harris and I taught our first course at a prison called 'How to Start Your Own Business When You Get Out'," he recalls.

    At the time, Hamilton was building his own company, Sageworks. As Sageworks grew, so did Hamilton's time spent teaching at prisons throughout North Carolina.

    Eventually, Hamilton decided it was time to change his focus to his true passion. In May 2018, he sold his stake(股份) in Sageworks, focusing his commitment on Inmates to Entrepreneurs.

    "Now, anyone is able to access the curriculum, either to become an instructor to go into prisons to teach it or to access it for themselves as a prisoner or part of the general population," Hamilton explains. In addition, he visits middle schools and presents the curriculum to at-risk students as a preventative measure against crime.

    The free curriculum is funded by the recently established Brian Hamilton Foundation, which offers assistance to military members as they adjust to civilian life and provides loans to small businesses. "We're giving prisoners something they can do independent of a system that isn't working for them. If you can let people know that other people care about them, it makes a difference."

Jack Horner is co-author of the book How to Build a Dinosaur. However, he is most famous for his role as consultant(顾问) on all four Jurassic Park films, including the new film Jurassic World.

The original film Jurassic Park tells the story of a theme park where dinosaurs live. In that movie, scientists used DNA collected by ancient mosquitoes that had been trapped in amber shortly after they drank dinosaur blood. The scientists used this dinosaur DNA to create baby dinosaurs. The scientists in Jurassic Park created various types of dinosaurs, but in the real world there is one big problem with the story. It turns out that DNA could not possibly survive the 65 million years since the death of the dinosaurs.

The new movie creates the Indominus Rex. This idea of creating a hybrid species is something Horner has explored before. In 2011, he gave a speech in which he discussed producing a dinosaur by working with the genes of a bird. Modern birds are the closest living relative of dinosaurs.

The concept of using the genes of different animals to create new animals is called transgenic science. And this type of science has already produced some interesting results — goats that produce spider silk in their milk, cows that produce proteins for medicines that can treat diseases, and a pig that produces less-polluting waste thanks to a bit of mouse DNA. However, none of these examples are close to the dinosaurs in Jurassic World. And for a good reason — genetics is a very complex science. Producing a new species is not as simple as just exchanging a few genes around.

In the end, Jurassic World is all about fun.