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A newly discovered comet is passing through our solar system for the first time in more than 400 years. Scientists say star watchers across the Northern Hemisphere should look to the sky as soon as possible, either this week or early next. They say it will be another 400 years before the comet returns to our neighborhood. The comet’s official name is C/2023 P1 Nishimura. It is about one kilometer...

Most of us know what it's like to get presents from friends. Whether it's for a birthday or other celebration, it's hard to beat the excitement of opening a carefully  wrapped  box to find something that's both unexpected and  suits  you perfectly. Now, imagine if you could get the same feeling when you go shopping for yourself. That's the feeling that mystery boxes h...

If you've never planked, it involves holding the starting position for a push-up. A wall squat requires you to hold a sitting position with your back against a wall. 如果你从来没有做过平板支撑运动，那么它指的是身体保持俯卧撑起始位置的训练方法。靠墙静蹲运动则需要你保持坐姿，背部贴住墙面。 Both are isometric exercises, focusing on static strength training. According to a review of trials involving n...

There is growing interest in how AI could transform healthcare. The idea of using it to help with breast cancer screening is one of the major areas of interest. 人们对可以如何运用人工智能来改造医疗保健服务的兴趣日益浓厚。使用人工智能帮助筛查乳腺癌的想法是人们感兴趣的主要领域之一。 Previously, studies have shown benefit, and this latest research, led by a team at Lund University, adds to that by di...

Officials at the U.S. Military Academy West Point in New York state recently opened a time capsule that is 195 years old live on the internet. The event on August 28 caused disappointment because the container appeared to contain nothing more than dirt. But West Point officials said last Wednesday that the box did contain hidden treasure after all. A time capsule is a container that is filled with...

Scientists studying the Atlantic puffin population off the coast of Maine say the birds are now recovering after suffering major losses in 2021.↳ Atlantic puffins look and walk similarly to penguins. Wildlife officials say reproductions for the animals on islands off the coast of Maine fell sharply in 2021. But last year, about two-thirds of puffins in the area produced young. While the numbers di...

A new environmental report says rising air pollution across South Asia can cut life expectancy rates by up to five years. 一份新的环境报告称，南亚地区日益严重的空气污染可能导致预期寿命缩短五年。 South Asia includes the world’s most polluted countries, including India, Bangladesh, Nepal and Pakistan. The area accounts for more than half of the total lives lost worldwide to pollution, the...

Sky watchers around the world were treated this month to two full moons, a supermoon and a blue moon. The American space agency NASA explains a supermoon happens when the moon’s orbit brings it closer than usual to Earth at the same time that the moon appears full from Earth. The first supermoon of 2023 was in July. The fourth and last one will be in September. The last time tw...

International health officials are closely following a new version of COVID-19 as it spreads to more countries. The version, or variant, is called BA.2.86. Officials from the World Health Organization (WHO) say it has already been identified in several countries, including the United States, Switzerland, South Africa, Israel, Denmark and Britain. WHO Director-General Tedros Adhanom Ghebreyesu...

For years, thousands of us have been  pounding the   pavements , trying to reach that  magic   goal  of 10,000 steps a day to stay fit and healthy, but new research has found that walking just half of that could also save lives. 多年来，成千上万的人不停地奔走，试图达到 “每天一万步” 这个被视为有奇妙功效的目标，从而保持身体健康，但一项新的研究发现，每天走路的步数只要达到这个...

It's summer, so it's a great time to be outdoors. One way of letting your hair down and enjoying the fresh air is to attend a music  festival , where you can enjoy seeing your favourite  musicians  perform. But it's not just about the music – there are other activities to enjoy. And of course, it's a chance to spend time with your friends. 现在是夏天，正是户外活动的好时机。 放松心情...

A brain doctor in Australia received a huge surprise during an operation on a patient’s brain last year: “Gosh, what is that, it’s moving. Take it out of my hands.” That is what Australian neurosurgeon Hari Priya Bandi said about finding a worm, or parasite, last year in a patient’s brain. Bandi was looking for the unexplained cause of symptoms in a 64-year-old woman. 澳大利亚的一位脑科医生去年在...

Octopuses are not communal animals. Most live alone their entire lives. 章鱼不是公共动物。 大多数人一生都独自生活。 So, scientists were surprised to find thousands of pearl octopuses living together as they protected their developing eggs. The community is on the ocean floor off the California coast. 因此，科学家们惊讶地发现数千只珍珠章鱼生活在一起，保护正在发育的卵。 该社区位于加利福尼亚海岸附近...

India became the fourth country to successfully land a spacecraft on the moon on Wednesday. It also became the first country to land a spacecraft near the moon’s south pole. 周三，印度成为第四个成功将航天器登陆月球的国家。 它还成为第一个在月球南极附近着陆航天器的国家。 Its moon lander, called Chandrayaan-3, touched down near the moon’s south pole just after 6 p.m. in...

Three new studies suggest links between natural gas wells and cases of cancer, asthma and birth problems. 三项新研究表明天然气井与癌症、哮喘和出生问题之间存在联系。 Children who lived closer to natural gas wells in heavily- drilled  western Pennsylvania were more likely to develop lymphoma, a rare cancer, researchers found. Nearby  residents  of all age...

As well as impressive  physical   attributes , elephants have a rich cultural  heritage , passed down through  customs  and  social   behaviour  which is learned, remembered, and shared within their  herds . 除了令人印象深刻的身体特征外，大象还拥有丰富的文化遗产，通过习俗和社会行为传承下来，并在象群中学习、记忆和分享。 This is possible partly ...

As a result of trade, travel and migration, different  cuisines  have spread across the world. Many  recipes ,  chefs  and  restaurants  try to claim that their example of a particular  culinary tradition  is the most authentic. But is this a good thing? 由于贸易、旅行和移民，不同的美食已经传播到世界各地。 许多食谱、厨师和餐馆都试图声称他们的特定烹...

Many young Chinese are increasingly turning to online streaming as a way to earn money while selling products for major companies. The job involves livestreaming on popular social media services in China. A person leading such livestreams is known as a host. The goal is to persuade users to spend money with large brands such as Under Armor, Lancôme, YSL Beauty and Hugo Boss. One such streamer is 2...

The United States has launched a competition for developing artificial intelligence (AI) to find and fix security issues in U.S. government infrastructure. Anne Neuberger is the U.S. government's deputy national security advisor for cyber and emerging technology. She told Reuters news agency, "Cybersecurity is a race between offense and defense." She said bad actors are already using AI to identif...

How the brain actually holds memories was for years something that was too difficult to understand. 多年来，大脑实际上如何保存记忆一直是一件很难理解的事情。 But scientists then realised than one part of it, called the hippocampus, plays the crucial role. Inside it there are billions of connections between the brain cells. And when those links becomes stronger, that's the key mechanism allowing us...

A mountain guide who recently climbed the world’s 14 tallest mountains in record time has set a new goal for himself. Tenjen Sherpa of Nepal says he now wants to become the youngest person to climb all the peaks twice. Last month, the 35-year-old Tenjen and 37–year-old Norwegian Kristin Harila, broke the record for the fastest climb of the mountains. All of the peaks are above 8,000 meters. The tw...

Record-breaking heat is affecting plants in many places around the world. But gardening expert Jessica Damiano says selecting the right plants and a little care could save them. Damiano wrote recently that her tomato plants have not developed much in the past few weeks, but her flower garden is doing very well. Despite temperatures over 37 degrees Celsius in the New York area, Damiano said she has...

Weeks after its international launch, Worldcoin is drawing the attention of officials around the world. Kenya’s government has gone so far as to shut down the service. The international ID company, backed by big investors in Silicon Valley’s technology industry, now has to defend itself in investigations. The central question is whether the biometric data that the company is collecting is sec...

Scientists have discovered fossils that might have belonged to the heaviest animal in Earth’s history. The blue whale holds the current record as the largest creature to live on Earth. But a collection of bones found in Peru might break that record. Researchers recently introduced the whale species in a study in the publication Nature. It is called Perucetus colossus, or “the colossal whale from P...

Wildfires on Hawaii’s island of Maui have killed at least 55 people and destroyed a historic town, officials said. The number of deaths is expected to rise even higher. Officials said it will take years to rebuild Lahaina, the one-time capital of the former kingdom of Hawaii. Governor Josh Green said the fire was the worst natural disaster in the state's history, making thousands of people homeles...