For Suilasaikhan, a man living in the Inner Mongolia Autonomous Region(IMAR)(内蒙古自治区), life was hard years ago. When the wind blew, the sand made it almost impossible for him to see anything. He had to find his way back home by following the barking of dogs.

    Thankfully, things are much better today. About one third of the desert is now covered with trees, and sandstorms are less common. Ian Teh, who comes from Malaysia, came to China last year and was amazed to see people planting trees in the several deserts in northern China. "To be honest, it was hard to imagine it was ever a desert at all," he said.

    These are the results of Chinas years-long efforts to deal with desertification (沙漠化). In the 1950s, this widespread problem affected the life of about 400 million people in 18 provinces and autonomous regions in China. So China started several programs to deal with it. For example, the Three-North Shelter Forest Program, saw thousands of trees planted in northern China.

    In 1994, China joined the United Nations' convention (公约) against desertification and created the world's first law on sand prevention in 2001. With these efforts, the past five years have seen the area of desert in China decrease by 242,400 hectares.

    Desertification isn't the problem only in China. With china's success in dealing with desertification, the United Nations Environment Program (UNEP) believes the country is a good example for other countries to follow. "China is one of the most successful countries in greening the desert and has lessons to share with the world." UNEP Executive Director Erik Solheim told Xinhua.

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    In the United States 30 percent of the adult population has a “weight problem”. To many people, the cause is clear: We eat too much. But scientific evidence does little to support this idea. Going back to the America of 1910, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically（体力地）, walked more, used machines much less, and didn't watch television.

    Several modern studies, moreover, have shown that fatter people don't eat more on average（平均）than thinner people. In fact, some investigations, such as a 1970 study of 3,545 London office workers, report that, on balance, fatter people eat less than slimmer people.

    Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts.

    The more the men ran, the greater loss of body fat.

    The more they ran, the greater their increase in food intake（吸收）.

    Thus those who ran the most ate the most, yet lost greatest amount of body fat.

    Mid-afternoon on a particularly busy Tuesday, I took leave of my desk at work and walked into a local Starbucks only to find a space where neither my clients nor my children would ask me to do something.

    Inside, I ran into Kate, a co-worker of mine. The topic of parenthood came up. I complained about how packed my schedule was. From the minute I woke up to the minute I fell asleep, I was constantly in demand and always had someone knocking at the door. But a bit of sadness seemed to come over Kate's face.

    "Well, my daughter's in San Francisco and she doesn't seem to need me at all these days," Kate said. It was in that moment that I realized although I might often feel in high demand, there will come a day when I will actually miss that same stress I then complained about.

    And as our conversation continued, it turned to our children's younger years, with Kate smiling proudly, thinking of the little boy and girl she raised who are now a man and a woman. But I noticed her smile was marked with regret. She explained that she often wondered about what she could have done differently when her children were in their earlier years.

    This got me thinking. Is regret an unfortunate footnote (注脚) to parenthood? With that in mind, I asked six older parents one question: What is your biggest regret from your early days as a parent?

    It turned out that all of them thought they could have done it better. But, each of them also has a strong, healthy relationship with their kids. Whatever regrets their parents might have had about their upbringing, one thing is clear —— it didn't affect them in a meaningful way.

    The bottom line is, we all feel like we could be doing this parenting thing better. And quite clearly, years later, we're still going to look back and wish we tried things differently. But the past can't be changed, and neither should it.

    The conclusion of the Paris Agreement in 2015, in which almost every nation committed to reduce their carbon emissions(排放), was supposed to be a turning point in the fight against climate change. But many countries have already fallen behind their goals. Meanwhile emissions worldwide continue to rise.

    The only way to catch up is to aggressively pursue an approach that takes advantage of every possible strategy to reduce emissions. Wind and solar energy are usually part of this effort, but it must also include investing heavily in carbon capture(碳捕捉), utilization(应用)and storage(CCUS)—a range of technologies that pull carbon dioxide from the air, and transform it into useful materials or store it underground. Although CCUS has been opposed as too expensive and unproved, recent gains have made it far more effective. Improvements such as chemical compounds could drive the cost down from $1 00 per ton of captured carbon in 20 16 to $ 20 per ton by 2025, according to a 2016 article in Science.

    Three primary CCUS paths lead to the reduction of carbon emissions: retrofitting(改装)existing power plants; reducing emissions in industries that cannot run on renewable energy; and directly removing carbon from the air. Cutting emissions from existing electric power stations with CCUS could be made more appealing in a future with a circular carbon economy, in which captured carbon could be resold and recycled for other uses——for instance, serving as a raw material for making concrete or plastics.

    The basic idea of carbon capture has faced a lot of opposition. Skepticism has come from climate change deniers, who see it as a waste of money, and from passionate supporters of climate action, who fear that it would be used to justify continued reliance on fossil fuels. Both groups are ignoring the recent advances and the opportunity they present. By limiting investment in decarbonization, the world will miss a major avenue for reducing emissions in a variety of industries. CCUS can also create jobs and profits from what was previously only a waste material by creating a larger economy around carbon.

    The transition to clean energy has become necessary. But that transition's ability to achieve deep decarbonization will become less effective without this wide range of solutions, which must include CCUS.

    How did the sea horse get its name? It's not hard to guess. The top half of this fish looks like a small horse. But looking at the sea horse's tail, you might think "sea monkey" is a better name. Then there's the sea horse's pouch(袋). "Sea kangaroo" might also be a good name for this fish.

    Sea horses live in warm ocean waters all over the world. They keep safe from other fish by hiding in plants and grasses that grow under the sea. They can also change colors to match their surroundings(环境). A sea horse remains in one place for hours at a time by winding(缠绕)its tail around a plant. It feeds on live food, such as small shrimp. For a fish that doesn't move around much, the sea horse eats a lot--in just one day, a sea horse can eat 3,000 shrimp!

    A sea horse keeps the same mate for its whole life, and it's the male(雄的)sea horse that gives birth to baby sea horses. How does this happen? Baby sea horses start out as eggs, which come from the female's body. The male carries the eggs in its pouch for about three weeks until they hatch(孵化). Soon after the babies are born, the female gives her mate a new set of eggs. The male sea horse spends most of its life carrying eggs.

    Sadly, the number of sea horses is becoming smaller. Why is this happening? Some places where sea horses once lived have been filled in to make new land. Also, many sea horses are caught and sold as aquarium（水族馆，养鱼缸）fish. This really is not a good idea because most sea horses don't live long in aquariums. The best place for a sea horse is the ocean.