2 . It has been more than 40 years since anyone spotted a Japanese river otter (水獭). And the once common Tangtze River dolphins have either disappeared or are very rarely seen.     1     But the advancement of technology could mean that the extinction of other species is not a given (必然).

A huge challenge scientists and conservationists encounter is tracking species facing extinction in order to help them.     2    . One example is the Maui dolphin, one of the rarest and most threatened dolphins in the ocean. Familiar with their summer behavior, researchers knew that there were just 54 of these mammals living off the coast of New Zealand.     3    . After four years of developing, testing and fundraising, these scientists received permission to use a drone with AI that tracked the dolphins no matter the season. The result was the extension of a marine safety place to protect their habitat.

    4    , AI is being used to enhance traditional methods of preventing hunting. Cameras record any boats that try to enter the park on Lake Itezhi-Tezhi, an illegal entry point. AI immediately detects this activity and alerts park rangers, who deal with the illegal hunters.

In Brazil, AI quickly analyzed over 150, 000 satellite images, revealing that the world’s largest tropical wetlands lost 74 percent of its surface water.     5    

The use of AI has helped to accelerate action and increase conservationists’ ability to protect the natural world for generations to come.

3 . In 1990, Hal Donaldson was 23 years old, fresh out of college and found himself in Calcutta, India, where he was asked to interview Mother Teresa.

Donaldson says about the great woman famed for feeding the hungry, “She wasn’t wearing shoes and her ankles were swollen. She sat down with me and was very polite.” After the interview, Mother Teresa asked him, “What are you doing to help the poor?” Donaldson admitted that he was young and wasn’t focused on helping others. With a smile on her face, Mother Teresa said, “Everyone can do something.”

Those words deeply struck Donaldson and forced him to face hard truths about himself.

Hal Donaldson grew up in the San Francisco Bay area. When he was 12 years old, his parents were hit by a drunk driver; his father died, and his mother was seriously injured. To make ends meet, they went on welfare. Donaldson says, “I had holes in my shoes and clothes. When you’re teased at school for that, you just want to escape.”

He managed to do just that. Donaldson got into college and turned his focus to making money for himself. He says, “I was just trying to find my way out of insignificance.” However, it’s easy to overlook others along the way. I was the guy that would see a homeless person and cross the street, so I didn’t have to confront (面对) him. My focus was on climbing to the top instead of helping those trying to climb with me.

Donaldson returned home from India with a different thought. He traveled to eight cities in America and stayed on the streets and listened to stories of the homeless. “My heart broke,” he says. “I knew I could no longer just live for myself.”

Inspired by Mother Teresa’s words and the stories he’d heard across America, Donaldson loaded a pick up truck with $300 worth of groceries and handed them out to anyone who needed help. In 1994, Donaldson created the nonprofit organization, Convoy for Hope, which works with communities across America and around the world. Their work focuses on feeding children, women’s empowerment, helping farmers and disaster services.

4 . Art and science may seem like opposite things. One means the creative flow of ideas, and the other means cold, hard data-some people believe. In fact, the two have much in common. Now, a study finds art can help students remember better what they have learned in the science class.

Mariale Hardiman, an education specialist at Johns Hopkins University, noticed that students who used art in the classroom listened more carefully. They might ask more questions. They might volunteer more ideas. What’s more, students seemed to remember more of what they had been taught when their science lessons had involved(涉及) art. To prove that, Hardiman teamed up with some researchers and six local schools.

In the experiment, the researchers worked with teachers in 16 fifth-grade classrooms. They provided traditional science lessons and art-focused ones. In a traditional science class, for example, students might read aloud from a book. In the art-focused one, they might sing the information instead.

The team randomly assigned(随机分配) each of the 350 students to either a traditional science classroom or an art-focused one. Students then learned science using that way for the whole unit-about three weeks. When they changed to a new topic, they also changed to the other type of class. This way, each student had both an art-focused class and a traditional one. Every unit was taught in both ways, to different groups of students. This enabled the researchers to see how students did in both types of classes.

The team found that students who started off in a traditional class performed better after they moved into an art-focused class. But those who started off in an art-focused class did well even when they went back to a traditional science class. These students appeared to use some of the art techniques(技巧) after going back to a traditional class. Classroom teachers reported that many students continued to sing the songs that they learned after finishing the unit. “The more we hear something, the more we retain it,” Hardiman says. “It suggests that the arts may help students apply creative ways of learning on their own.”

5 . Endangered polar bears are breeding (繁殖) with grizzly bears (灰熊), creating “pizzly” bears, which is being driven by climate change, scientists say.

As the world warms and Arctic sea ice thins, starving polar bears are being forced ever further south, where they meet grizzlies, whose ranges are expanding northwards. And with that growing contact between the two come increasing hybrids (杂交种).

With characteristics that could give the hybrids an advantage in warming northern habitats, some scientists guess that they could be here to stay. “Usually, hybrids aren’t better suited to their environments than their parents, but these hybrids are able to search for a broader range of food sources,” Larisa DeSantis, an associate professor of biological sciences at Vanderbilt University, told Live Science.

The rise of “pizzly” bears appears with polar bears’ decline: their numbers are estimated to decrease by more than 30% in the next 30 years. This sudden fall is linked partly to “pizzly” bears taking up polar bears’ ranges, where they outcompete them, but also to polar bears’ highly specialized diets.

“Polar bears mainly consumed soft foods even during the Medieval Warm Period, a previous period of rapid warming,” DeSantis said, referring to fat meals such as seals. “Although all of these starving polar bears are trying to find alternative food sources, like seabird eggs, it could be a tipping point for their survival.” Actually, the calories they gain from these sources do not balance out those they burn from searching for them. This could result in a habitat ready for the hybrids to move in and take over, leading to a loss in biodiversity if polar bears are replaced.

“We’re having massive impacts with climate change on species,” DeSantis said. “The polar bear is telling us how bad things are. In some sense, “pizzly” bears could be a sad but necessary compromise given current warming trends.”

10 . While tea may have originated in Asia, now there are many countries all around the world that have tea woven into their food culture and traditions. This is one of the very special parts of tea as it has a way of connecting people all over the world in different ways and ceremonies that finally all results in a group of people sitting together and enjoying a cup of tea.

Chinese tea culture

Since China is viewed as the birthplace of tea, it is no wonder that Chinese tea culture is rich with history and tradition. Today, Chinese tea continues to be used in Chinese medicine and is commonly consumed on both casual and formal occasions both for personal enjoyment and to represent Chinese cultural traditions.

Japanese tea culture

Japan also has a long history with tea, especially Japanese Matcha, which is a kind of ground green tea that is commonly used in Japanese tea ceremonies and only in recent years became popular in western culture.

British tea culture

When many people think about tea, British tea culture is what comes to mind. A hot cup of English Breakfast or Earl Grey tea serves with a little milk and a biscuit in the afternoon as a pick-me-up for the day. Even though tea may not be native to England, this British tea tradition is still going strong today.

Moroccan tea culture

When you visit Morocco, it is hard to miss the outstanding tea culture that is such a large part of Moroccan hospitality. Before any gathering, negotiation, or sale of a product, a pot of mint tea is always prepared and served among the host and guests. This is an expression of Moroccan tradition and hospitality, which should always be accepted by guests as a sign of appreciation and respect to the host.