Both are so much related to each other. And both are so dissimilar! What are the differences between friendship and love? Is platonic (理想的) friendship possible between persons of opposite sex? Let us try and understand.

    What is friendship? Why do we call a person our friend? When do we call someone a very good friend? If we care for a person, if we are always ready to help that person and if we share most of our thoughts with a person, they are our good friends. We can always count upon our good friends in an emergency. We are always sure that our friend will understand why we acted in a certain way. We need not explain anything to our very good friends. The friendship is so deep and the relationship is so close.

    What about love? In a relationship of deep love, all the sharing that we discussed above are taken for granted. But love transcends (胜过) all this. During love, we are attached with a particular person, while in friendship, one may have many friends. A loving relationship makes one so much attached to the other, that one gets pained if his/her beloved is hurt! Love also involves a physical element. Friendship does not have that. This is a vital difference. Nature gives us love but does not give us friendship.

    Your heart beats will never increase in expectation of meeting your friend. You will not lie awake at night thinking about your friend. You will not feel totally lost, if you don't meet your friend for a few days. You will not have dreams in your eyes thinking about your friend. But in love, you will do all this and much more. Indeed, there is no comparison between love and friendship.

    HANGZHOU-Chinese internet giant Alibaba on Tuesday opened a hotel loaded with artificial intelligence (AI) and robots, automating a series of procedures like check-in, lights control and room service.

    FlyZoo Hotel, opened in Hangzhou, capital of East China's Zhejiang province, where Alibaba is headquartered, is known as the company's first "future hotel". Customers can check into the hotel by simply scanning their faces. The facial recognition system installed in the hotel also enables customers to use their faces as key cards to open doors and access another hotel service. Users can also control the lights, televisions and curtains in the room via Alibaba's voice-activated digital assistant, while robots are deployed to serve dishes, cocktails and coffee. Hotel bookings and check-out can also be done with a few clicks on mobile through an app. The Al-based solution can help customers save time and relieve hotel employees from repetitive work," said Wang Qun, CEO of FlyZoo Hotel. The hotel is the latest example of Chinese tech companies1 attempt into traditional industries such as the hotel industry.

    E-commerce giant JD.com announced in October its strategy to put smart home and electronic devices sold on its platform into hotels, in an effort to improve online sales.

    In July, Baidu teamed up with Intercontinental Hotels Group in Beijing to allow guests to use its voice-controlled assistant to adjust room temperature and order room service at ease.

    Before that, social media giant Tencent introduced QQ family, a similar tech solution for hotel operators, in the southern city of Zhuhai last year.

    "We want to install a 'smart brain' for hotels, " said Wang, "In the future, we will continue to make hotels smarter and more automated, as well as create more personalized experiences for consumers."

    Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the inhabitants of a country. If tourists create too much traffic, the inhabitants become annoyed and unhappy. They began to dislike tourists and to treat them impolitely. They forget how much tourism can help the country's economy. It is important to think about the people of a destination country and how tourism affects them. Tourism should help a country keep the customs and beauty that attract tourists. Tourism should also advance the wealth and happiness of local inhabitants.

    Too much tourism can be a problem. If tourism grows too quickly, people must leave other jobs to work in the tourism industry. This means that other parts of the country's economy can suffer.

    On the other hand, if there is not enough tourism, people can lose jobs. Business can also lose money. It costs a great deal of money to build large hotels, airports, air terminals, first­class roads, and other support facilities needed by tourist attractions. For example, a major international class tourism hotel can cost as much as 50 thousand dollars per room to build. If this room is not used most of the time, the owner of the hotel lose money.

    Building a hotel is just a beginning. There must be many support facilities as well, including roads to get to the hotel, electricity, sewers to handle waste, and water. All of these support facilities cost money. If they are not used because there are not enough tourists, jobs and money are lost.

    There are two kinds of secrets: secrets of nature and secrets about people. Natural secrets exist all around us; to find them, one must study some undiscovered aspect of the physical world. Secrets about people are different: they are things that people don't know about themselves or things they hide because they don't want others to know. So when thinking about what kind of company to build, there are two distinct questions to ask: What secrets is nature not telling you? What secrets are people not telling you?

    It's easy to assume that natural secrets are the most important: the people who look for them can sound authoritative (权威的).This is why physics PhDs are difficult to work with—because they know the most basic truths, they think they know all truths. But does understanding electronic theory automatically make you a great marriage counselor? Does a gravity theorist know more about your business than you do? At PayPal, I once interviewed a physics PhD for an engineering job. Halfway through my first question, he shouted, "Stop! I already know what you're going to ask!" But he was wrong. It was the easiest no-hire decision I've ever made. Secrets about people are relatively overlooked. Maybe that's because you don^'t need a dozen years of higher education to ask the questions that uncover them: What are people not allowed to talk about? What is forbidden or taboo?

    The best place to look for secrets is where no one else is looking. Most people think only in terms of what they've been taught; schooling itself aims to spread basic wisdom. So you might ask: are there any fields that matter but haven't been standardized? Physics, for example, is a real major at all major universities, and it's set in its ways. The opposite of physics might be astrology, but astrology doesn't matter. What about something like nutrition? Nutrition matters for everybody, but you can't major in it at Harvard. Most top scientists go into other fields. Most of the big studies were done 30 or 40 years ago, and most are seriously flawed (有缺陷的). The food pyramid that told us to eat low fat and large amounts of grains was probably produced by Big Food(美国著名食品公司)than real science; its chief impact has been to worsen our obesity(肥胖)problem. There^'s plenty more to learn: we know more about the physics of far away stars than we know about human nutrition. It won't be easy, but it's not obviously impossible: exactly the kind of field that could produce secrets.

Racing is nothing new for Sebastian Rosado. He was born with cerebral palsy (脑瘫), which affects a person's ability to move. Though most of his life has been limited to a wheel-chair, he has done at least one race a year since 2011.

It was about a decade ago that his mother, Jaime, was training for a race in Puerto Rico, and Sebastian asked if he could accompany her. She'd have to push him in the wheelchair because his arm functions are limited, and she was okay with that. However, the race wouldn't allow it. Then, Sebastian's family decided to make a special race for children like Sebastian. The race gives them a chance to prove that despite being told from a young age that they might not be able to do some things in their lives, they can also become what they wish to be in life.

Sebastian has run it every year using a special walker. Each year, he tries to outdo his previous goal. Instead of just 5 km in 2020, he wanted to attempt to run 21 km over 30 days. Sebastian's plan is to complete the distance by May 9, accounting for completing 1 km, at most, in a day.

Sebastian used to train in a track and field facility close to home, and it's amazing to hear runners telling him things like, "Wow , sometimes I don't have the strength to train but when I see you doing this, I feel that I have no excuse," 62 swimmers are joining Sebastian's challenge this month by swimming 800 meters each one.

Sebastian has a saying that your disability is not in your body, but in your mind. It's really powerful. If you promise yourself you'll do something, you can achieve it by using your mind.

On a chilly autumn morning in the Italian countryside near Larderello, Tuscany, the misty landscape reminded me why the area is nicknamed the Devil's Valley. The land here is a web of natural cracks in the rock that let a mix of steam and gases reach the surface.

Unlike the rolling hills and cypress-lined roads of other parts of Tuscany, the landscape here is covered with dozens of grey cooling towers puffing white vapors. The deafening roar of a turbine (涡轮机) at the Valle Secolo geothermal (地热的) plant breaks the quietness, but its violent spinning transforms steam rising from underground into energy for 150,000 families in the region. About 30% of Tuscany's electricity comes from this energy source. After producing electricity, the leftover steam heats water for nearby districts.

This underground energy has recently proved a vital resource. Italy greatly depended on Russian fossil fuels and in 2023 Italians bore the world's highest household electricity bills. Factories cut down production and households had to turn down their heaters. But residents of the Larderello area spent the winter in warm homes, thanks to the local geothermal plants working 24/7.

Bruno Della Vedova, president of the Italian Geothermal Union, hopes that in the future other Italian regions could benefit from such a resource, which is extremely important when the whole world looks to transition to renewable energy.

While countries like Iceland and Kenya are taking advantage of their geothermal resources, the industry's growth has made slow progress in Italy. High set-up costs and difficulties in extraction present significant barriers. And new plants often run into opposition from nearby communities over health concerns.

Italy sits on a geothermal sweet spot. Especially below Larderello, as Della Vedova says. A vast reservoir (储备) of steam and water is trapped between Earth's inner heat and a layer of clay-heavy rocks. High temperatures lead to the formation of steam directly inside the reservoir, providing a significant source of energy.

But while heat from Earth's core is practically endless, the water it heats within the planet are not. So Della Vedova says restoring underground water supplies and using them sustainably is critical for the future. "We can't take advantage of a geothermal resource at will," he says.