【推荐1】After decades of work trying to save the giant panda, Chinese officials have announced the species is no longer endangered. The pandas have been reclassified in the country from endangered to vulnerable (易危的) after efforts to increase the population. Now the number has risen to 1,800 in the wild.

“China has established a relatively complete nature reserves system,” Cui Shuhong, director of the Department of Natural Ecological Protection of the Ministry of Ecology and Environment, said on Wednesday. “Large areas of natural ecosystems have been systematically and completely protected, and wildlife habitats have been effectively improved.” The latest classification upgrade reflects their improved living conditions and China’s efforts in keeping their habitats integrated, Cui added.

Bamboo makes up 90% of pandas’ diets, and the animals would likely starve without the shoots (竹笋). Experts believe China’s efforts to replant bamboo forests have been the key to the increase in the population of pandas. Generally speaking, a panda has to eat at least 26 pounds of bamboo every day to maintain its energy, so large areas of bamboo forests are primary to their survival.

Planting bamboo also has advantages for the planet, as the bamboo is grass, not a tree, and is incredibly efficient at absorbing carbon dioxide, as well as emitting (排放) 35% more oxygen than trees.

“The Chinese have done a great job in investing in panda habitats, expanding and setting up new reserves,” Ginette Hemley, senior vice president of conservation at the World Wildlife Fund, told the media. “They are a wonderful example of what can happen when a government is committed to conservation.”

Continuing China’s success will be dependent on the country protecting land from agricultural and urban development. As land becomes rarer, measures will need to be extended to protect more land, to ensure bamboo forests can thrive and as a result, protect the future of the world’s most lovable, lazy, and monochrome (black and white) creature.

【推荐1】A child plays many roles, such as friend, neighbor, son or daughter. Simply reminding children of that fact can lead to better problem-solving and more flexible (灵活的) thinking, finds a new research from Duke University.

“This is some of the first research on reminding kids about their many roles said lead author Sarah Gaither, a professor at Duke. “Such reminders improve their problem-solving skills and how flexibly they see their social worlds.”

In one experiment, Gaither and her workmates looked at 196 children, aged 6 and 7. All were native English speakers. The first group of children was reminded of their various identities, such as son, daughter, reader or helper. A second group of children was reminded of their many physical features. The rest of the children were reminded of other children’s many roles, not their own.

All the children solved many tasks. The first group of children showed stronger problem-solving and creative thinking skills. For example, when shown pictures of a bear looking at a honey-filled beehive (蜂巢) high up in a tree, these children had more creative ideas for how the bear might get the honey, such as turning over a bowl as a seat.

The second group of children also showed more flexible thinking about social groupings. When asked to group different photos of faces, they suggested many ways to do so. For example, they identified smiling faces VS unsmiling ones, and old VS young faces. The other children mainly grouped people’s faces by race and gender.

“We often only think about ourselves in connection with one important group at a time,” said Christopher Marlowe, a schoolmaster in Durham, North Carolina. “When we remind kids that they have various identities, they think more and remember that there are many other groups. They are more open-minded.”

【推荐2】Parents often believe that they have a good relationship with their teenagers. But last summer, Joanna and Henry noticed a change in their older son. Suddenly he seemed to be talking far more to his friends than to his parents. “The door to his room is always shut,” Joanna noted.

Tina and Mark noticed similar changes in their 14-year-old daughter. “She used to cuddle up (依偎) against me on the sofa and talk,” said Mark. “Now we joke that she does this only when she wants something. Sometimes she wants to be treated like a little girl and sometimes like a young lady. The problem is understanding which time is which.”

Before age 11, children like to tell their parents what’s on their mind. “In fact, parents are first on the list,” said Michael Riera, author of Uncommon Sense for Parents with Teenagers. “This completely changes during the teen years,” Riera explained. “They talk to their friends first, then maybe their teachers, and their parents last.”

Parents who know what’s going on in their teenagers’ lives are in the best position to help them. To break down the wall of silence, parents should create chances to understand what their children want to say, and try to find ways to talk and write to them. And they must give their children a mental (思想的) break, for children also need freedom, though young. Another thing parents should remember is that to be a friend, not a manager, with their children is a better way to know them.

【推荐3】Language is always changing. In a society where life continues year after year with few changes, the language does not change, either. The earliest known languages had difficult grammar but a small, limited vocabulary. Over the century, the grammar changed, and the vocabulary grew. For example, the English and Spanish people who came to America during the sixteenth century gave names to all new plants and animals they found. In this way, hundreds of new words were introduced into English and Spanish vocabularies. Today life is changing very fast, and language is changing fast too.

There are several major language families in the world. Some scientists say there are nine main families, but other scientists divide them differently. The languages in each family are connected, and scientists think that they came from the same parent language About 3 percent of the people in the world speak languages that are not in these major families.