1 . Studying a subject that you feel pointless is never a fun or easy task. If you’re studying history, asking yourself the question “why is history important” is a very good first step. History is an essential part of human civilization. You will find something here that will arouse your interest, or get you thinking about the significance of history.

History grounds us in our roots. History is an important and interesting field of study, and learning the history of our home country can give us a deeper, more meaningful glimpse (一瞥) into our ancestral pasts, and how we got to where we are today. Many people feel like they need a sense of cultural belonging, which is something that studying your roots and being open-minded to the evolution (演变) of your culture can provide.

History enriches our experience. Reading history is an amazing experience because it enables us to reflect on the social and economic life of the people living long time ago. According to the experts, problems faced by people regardless of the past and present are the same. With the information about the ancestors, one can become more experienced in handling challenges of life.

History makes us more empathetic (具有共情能力的). Studying history can give us insight (洞察力) into why our culture does certain things, and how the past has shaped it into what we know now. It also provides a rather strong foundation for empathy across cultures. Fear and hate for others is usually caused by ignorance (无知). We’re scared of the things that we don’t understand. History has the potential to break down those boundaries by offering us insight into entire worlds that would otherwise be foreign to us.

History can inspire us to learn more. What’s fantastic about history is the way it broadens our horizons. It’s almost impossible to learn about one historical period without having dozens of questions about related concepts. Study the 19re century England, and you might catch a glimpse of Charles Dickens’ Oliver Twist. Look up Charles Dickens, and you might learn a thing or two about realism. Or maybe you end up switching your attention away from novels, and discover the history of romantic poets in England. It can go anywhere, and there is something in there for absolutely anybody.

The value of history cannot be underestimated. We don’t have to live in the past, but we can definitely do better by learning from it and using the lessons learnt to lead more meaningful lives.

2 . Will you go on this ride with me? ”my friend’s eleven-year-old daughter Jenny asked. She stared at the ride, eager to experience the same excitement as the brave group of riders in front of us. I couldn’t say no.

After climbing into our seats, an attendant reached up, pulled down the bar, and locked it in place. The ride lifted us slowly, then turned us over like the blueberry pancakes I had eaten three hours earlier, and hoped to keep in their proper place. As I stared at the concrete directly below us, I had a sudden feeling of great fear. I wondered if I had replacement coverage (保险) for the phone that I was sure would slip out of my pocket and break into a million tiny pieces. I wondered when my new health insurance would kick in.

The ride touched down after twisting and turning our bodies. My friend was waiting for us at the exit. “How was it?” she asked. “Fine. No big deal,” I said, even though my head was spinning (旋转) like one of the other annoying machines dotting the midway.

Jenny walked ahead of us and convinced me to keep taking chances and sample more rides

“Oh, look at the pirate ship (海盗船)!” she said. “That looks like a calm ride.”

“Let’s go, Auntie!” she said as she rushed to join others in line.

I followed her, feeling confident the ride would be uneventful. When I reached the bottom, I tapped out like a WWF wrestler admitting defeat. Although my body was shaking and my head was still spinning, I felt exhilarated just like I was on the top of the world. That morning, I set a goal, took my first step to reach it, and felt the joy of achievement.

Each time you try something for the first time, you will grow — a little piece of the fear of the unknown is removed and replaced with a sense of satisfaction.

4 . According to a new Agriculture Department report, U. S. forests could exacerbate global warming because they are being destroyed by natural disasters and are losing their ability to absorb planet-warming gases as they get older. The report predicts that the ability of forests to absorb carbon will start declining after 2025 and that forests could release up to 100 million metric tons of carbon a year as their emissions (排放) from decaying (腐烂的) trees go beyond their carbon absorption. Forests could become a “substantial carbon source” by 2070, the USDA report says.

The loss of carbon absorption is driven in part by natural disasters such as wildfires, tornadoes and hurricanes, which are increasing in frequency and strength as global temperatures rise. The disasters destroy forestland, destroying their ecosystem and decreasing their ability to absorb carbon, according to Lynn Riley, a senior manager of climate science at the American Forest Foundation. Aging forests also contribute. The report found that older, mature trees absorb less carbon than younger trees of the same species, and U. S. forests are rapidly aging.

This trend is likely to continue, as forests come under increasing threat from climate change and exploitation (开采). The typical tropical (热带的) forest may become a carbon source by the 2060s, according to Simon Lewis, professor in the school of geography at Leeds University. “Humans have been lucky so far, as tropical forests are cleaning up lots of our pollution, but they can’t keep doing that indefinitely,” he said. “We need to cut down fossil fuel emissions before the global carbon cycle starts working against us.”

U. S. forests currently absorb 11 percent of U. S. carbon emissions, or 150 million metric tons of carbon a year, equal to the combined emissions from 40 coal power plants, according to the report. The loss of forests as natural carbon absorbers will require the U. S. to cut emissions more rapidly to reach net zero. “As we work to decarbonize (碳减排), forests are one of the greatest tools at our handling. If we were to lose that, it means we will contribute that much more in emissions.” Riley said.

7 . Making use of the wind, the water or, for more than half of all plant species, animals, plants disperse (散播) seeds far and wide. Frugivores — animals such as gibbons that feed on the fleshy fruits of plants — eat and then excrete (排泄) seeds away from the original tree. The African savanna elephant can carry seeds up to a record-breaking distance of 65 kilometres. This ability to shift geographical ranges will be crucial to plants when it comes to surviving climate change. However, just like all gibbon species, the African savanna elephant is endangered, its population down by 60 percent over the past 50 years.

Researchers in Denmark and the USA have published a new study into how the loss of seed-dispersing animals could affect the resilience (恢复力) of forests and other natural ecosystems. They found that, historically, the decline of seed-dispersing animals has had the greatest influence on plants across the temperate (温带的) regions of North and South America, Europe and southern Australia. “Our temperate ecosystems have lost a lot of the natural seed-dispersal function that they would have had,” explains Evan Fricke, lead author of the study, referring to large mammals that were once widespread in these regions.

Nevertheless, the poor conservation status of many seed-dispersing tropical animals puts plants in regions such as Southeast Asia and Madagascar most at risk today. Without the preservation of such animals, global seed dispersal could decline by a further 15 percent. “The direct implication of this decline is that many plant species will be unable to keep pace with a changing climate,” says Fricke. “That means the potential loss not only of plant biodiversity but of the ecosystem functions that those plants provide.”

As wildlife is lost, plants can no longer adapt and survive and forests become less sustainable, which reduces the amount of carbon they can store. They also lose their ability to support wildlife. Whole ecosystems are disrupted. The conclusion, Fricke says, is clear: we must conserve currently endangered species and restore the populations of important seed dispersers. “Independent of climate change, rewilding has the potential to benefit our ecosystems, but in a changing climate, it has the added benefit of increasing the climate resilience of those ecosystems,” he says.

Robots help us in many ways — from assembly lines to looking after the elderly. Now they’re turning their attention to coping with climate change by helping to plant trees.

Milrem Robotics, an Estonian company, has developed an autonomous robot forester. The new robot forester can plant a hectare of forest in less than six hours. The robotic planters are equipped with Lidar (Light Detection and Ranging) which uses laser pulses to build up a three-dimensional image of the robots’ surroundings and global positioning (GPS) to navigate precisely. The position of each sapling is recorded in a database as it is planted, which means that a specialized brush cutter version of the robot forester can reduce competitive growth without harming the young trees.

The robot forester is designed for working in commercial forests and it could be used to restore natural forests, too. Deforestation (滥伐) contributes 15% of all global greenhouse gas emissions. Conservationists say, “We lose 10 million hectares of trees every year to agriculture and logging and we need to plant a trillion trees to reverse forest cover loss to help slow down climate change.” A mature tree can capture an average of 0.62 metric tons of carbon dioxide over its lifetime — equivalent to the carbon emissions from driving a car 2,400 kilometres. Tree planting is just one of a range of measures needed to fight climate change and scientists say it’s important to plant the right trees in the right place for it to be effective.

These robotic planters are just one of the many new solutions beginning to surface in time for the decade of delivery on climate change. We can do a lot to help in our daily life.

Skyscrapers (摩天大楼) are the ultimate symbol of urban life. By 2050, almost 80 percent of the earth’s population could live in cities. The human population could increase to 9.1 billion people yet the amount of land available for farming will be the same. How to meet the increasing food needs of our planet could be a big problem.

Vertical farms, where urban farmers could grow crops in environmentally friendly skyscrapers, could be the solution. In spite of concerns over high costs, experts want to make these urban farms a reality and use these skyscrapers to grow crops. They believe that we can increase food production by changing our thinking from out to up.

Vertical farms would have many advantages, experts say. The food would be grown with minimal effects on the environment. Unlike traditional farming, vertical farming would not force animals out of their habitats by taking over large areas of land, nor would it pollute the air with the use of heavy farming equipment. Those farms would also reduce the cost and negative effects of transporting food over long distances. These have been well recognized.

Growing prosperity has led to many people demanding that all foods are available all year round. Indoor farming could produce crops constantly and crops would not suffer from weather-related problems like drought or flooding. In addition, the use of agricultural chemicals for controlling insects would be minimal.

Experts agree that new farming practices are needed to support the planet’s need for more and more food at affordable costs, both to the farmer and to the consumer. Vertical farms may be a small-scale answer, but the best ideas could be yet to come.