How do I book a place on Airbnb?

    When you book a place on Airbnb, you are making arrangements to stay in Someone's home. Each host has their own style of hospitality, starting with how. They like to get to know their guests. Some hosts want to approve reservations, while others are comfortable letting you book their place instantly without waiting for approval.

    ⒈Complete Your Personal Details

    In either case, it's important to know that Airbnb is a community that relies on trust. Complete your personal details before you request a reservation with a host, so they can know a little bit about you when they confirm. Your personal details should include photos and verifications (证明）, especially because some hosts require guests to have a profile photo and verified ID in order to book.

    ⒉Find the Right Place

    With over 800,000 unique listings around the world, you'll want to make sure the place you choose has everything you need for a comfortable and memorable trip. When searching for a place, make sure to include your dates and number of guests to get the most accurate pricing. Read reviews, descriptions, house rules, and facilities for each place to see if it's the right fit for your trip. You can always contact the host if you have any questions about their home.

    ⒊Book It!

    You've found the perfect place, and now it's time to make it official. This is where the host's preferred way of booking will determine how you'll confirm your reservation.

    Instant Book

    For hosts who don't want to approve each reservation, you'll see a button on their listing that says Instant Book. Like the name suggests, you can confirm a reservation at these places right away.

    Request to Book

    Many hosts prefer to approve reservations before they're final. In this case, you'll see a button on their listing that says Request to Book. To submit a reservation request, you'll need to enter your payment details.

    Hosts have 24 hours to accept your request, and your reservation is automatically confirmed once they do.

    Pre-approvals and Special Offers

    If you decide to contact the host to ask questions before attempting to book, the host may respond to your message by inviting you to make a reservation with either a Pre-approval or a Special Offer. A Pre-approval is an invitation to finish booking for the dates and number of guests you noted in your message. A Special Offer gives the host the opportunity to provide special pricing, dates, and other reservation details before you book.

    To save as much language diversity as possible in the face of its rapidly dying out, researchers suggest using “evolutionary trees”, a tool from conservation biology.

    One of the world's 7,000 languages disappears every other week, and half might not survive the 21st century, experts say.

    When setting conservation goals, ecologists use evolutionary trees—diagrams that show how biological species are related to one another—to identify species that have few close relatives. Such species are said to be evolutionarily distinct. Similarly, recent advances in the construction of language trees make it possible to measure how unique a language is.

    “Evolutionary trees have transformed our understanding of how life has evolved and helped us to decide which species most need conserving,” says Jonathan Davies, senior author of the new study.

    “The rapid rate of language loss, as well as limited resources for preservation（保护）, means that we must choose carefully where to focus our efforts,” adds Max Farrell, a PhD student in Davies' lab. “The more isolated (孤立的) a language in its family tree, the more unique information it contains and eventually contributes to language diversity.”

    As a case study, they used this approach to rank 350 Austronesian languages, spoken in islands spread across Southeast Asia and the Pacific Ocean.

    For each of these languages, the researchers combined measures of evolutionary distinctiveness (ED) and global endangerment (GE) to produce an “EDGE” score. The language with the highest score, which means it is extremely distinct（不同的） yet nearly dying out, was Kavalan, a language native to Tai Wan. The next-highest scores went to Tanibili, an endangered language in the Solomon Islands.

    By building trees for other language groups, language specialists could target preservation efforts and help reduce the loss of language diversity in the future, the researchers say.

    Feeding a crowd of hundreds doesn't make Kenny Seals-Nutt nervous.

    In fact, he loves being in the kitchen.

    By the time Kenny, 16, reached his third year of high school in Charlotte, US, he had become vice president of his school's cooking club.

    Kenny said he developed his love of cooking by watching his grandmother, who owned a business.

    And at the age of 5, he cooked his first dish. Taking it to school for lunch, he warmed it up in the school's microwave, while the other kids ate their sandwiches.

    "I love to eat, and it started to become more fun to cook than to have food prepared for me," he said.

    Cooking came easy to Kenny, and he enjoyed adding new ingredients (原料) into common dishes. "It started with a passion (热情) and I wanted to know more," he said.

    Last summer, Kenny put his skills to the test by working with his grandmother to cater his uncle's wedding. Kenny added new changes to the traditional (传统的) dishes that his grandma had prepared.

    Chef Frederick Mookie Hicks, owner of a catering business, said Kenny's success comes from his ability (能力) to multitask (多任务) in the kitchen.

    "He's so enthusiastic (热情的) about cooking that he doesn't let anything stop him," Hicks said.

    Chinese high school students who want to enter the University of Cambridge may find that their scores on the national college entrance examination, or gaokao, will help their applications in the future.

    The University of Cambridge said in March that it has been using scores on gaokao as part of its admission criteria (标准) for Chinese students for several years, according to its official Weibo account. In addition to top scores on gaokao, Chinese applicants also need to meet English language requirements, participate in an interview and take a subject-specific wrillcn admission assessment (评估).

    The gaokao has been crillcized by some as a one shot exam that focuses on rote learning (死记硬背) rather than creativity. However, more and more people believe that there's no perfect predictor (侦测指标) of academic performance, and gaokao has the advantage of being what educational experts call a criterion-referenced (标准参照) exam—tests when her students are able to master a given body of knowledge , as well as their ability to work hard and consistently. Recent years have seen more and more foreign universities begin to accept gaokao scores as part of the application process.

    Despite the gaokao's growing acceptance among US universities, "There is a long way to go before the US education circle fully recognizes the gaokao, as there are still many US universities that don't accept it as part of their application process," Chu Zhaohui, a researcher from the National Institute of Education Sciences, told the Global Times.

Any schoolchild knows that a whale breathes through its blowhole. Fewer know that a blowhole is a nostril （鼻孔） slightly changed by evolution into a form more useful for a mammal that spends its life at sea. And only a dedicated expert would know that while toothed whales, such as sperm whales, have one hole, baleen （鲸须） whales, such as humpback and Rice whales, have two. 

Even among the baleen whales, the placing of those nostrils differs. In some species they are close together. In others, they are much further apart. In a paper published in Biology Letters Conor Ryan, a marine biologist at the Scottish Association for Marine Science, suggests why that might be. Having two nostrils, he argues, helps whales smell in stereo （立体空间）. 

Many types of baleen whales eat tiny animals known as zooplankton （浮游动物）， which they catch by filtering （过滤） them from seawater using the sheets of fibrous baleen that have replaced teeth in their mouths. But to eat something you first have to find it. Toothed whales do not hunt by scent. In fact, the olfactory bulb-the part of the brain that processes smell-is absent in such creatures. But baleen whales still have olfactory bulbs, which suggests smell remains important. And scent can indeed give zooplankton away. Zooplankton like to eat other tiny creatures called phytoplankton （浮游植物）. When these are under attack, they release a special gas called dimethyl sulphide, which in turn attracts baleen whales. 

Most animals have stereoscopic senses. Having two eyes, for instance, allows an animal to compare the images from each in order to perceive depth. Having two ears lets them locate the direction from which a sound is coming. Dr Ryan theorized that paired blowholes might bring baleen whales the same sorts of benefits. 

The farther apart the sensory organs are, the more information can be extracted by the animal that bears them. The researchers used drones to photograph the nostrils of 143 whales belonging to 14 different species. Sure enough, baleen whales that often eat zooplankton, such as the North Atlantic right whale, have nostrils that are farther apart than do those, such as humpback whales, that eat zooplankton occasionally. Besides allowing them to breathe, it seems that some whales use their blowholes to determine in which direction dinner lies. 

In Bududa, a lush yet landslide-prone district of eastern Uganda, Mary Butsina and a growing number of other women farmers are building their livelihoods around coffee. "I'm supporting all of my 10 children with it." says the 36-year-old, holding a red bucket.

From farming stock, Mary first went to work with her father at the age of 10. Profits from his coffee crop covered her school fees. She married into coffee too, with her husband giving her 100 trees as a wedding present. But Mary's since planted more than 300 herself and joined a women's cooperative. "The aim was to reduce the dependence of women on men in coffee." Mary says, though husbands are allowed to join too—as they tend to own the coffee plantations and support their wives. "More women have started to plant their own coffee." she says. 

Mary rises early every day to pick the coffee cherries. "It's hard work but when you concentrate it can become easy." says Mary. After gathering the ripe fruit, she puts it in a bucket of water to weed out the unhealthy cherries. The beans are then fermented (发酵) in water for at least two days before being laid out to dry in direct sunlight. Once dried, the beans are gathered up and later collected by Endiro Coffee, a social enterprise working with women-led, organic farms. The coffee is later milled, roasted and ground, ready for use.

It hasn't been an easy journey for the Bududa farmers, who've faced annual landslides for the past 15 years. In 2018, Mary's mother's house was destroyed and she lost some of her coffee plantations. She dreams of living in a solidly built house with water nearby, so she doesn't have to trek (跋涉) a long way to fetch it－but these will take time to save for. "I've worked a lot and I don't want to stop, but I want my money to work for me." she says.