Writing Feedback / The new developed ink can be used to 3D-print flexible bone implants in any size, shape and form [2]

Article Summary: Bouncy Bone can be 3D-printed to become a universal repair kit

The newly developed ink can be used to 3D-print flexible bone implants in any size, shape and form, giving surgeons a cheap and versatile way of repairing an injury. Ramille Shah at Northwestern University in Illinois and her colleagues have developed an ink that can be 3D-printed into bone implants that ultra-elastic, allowing surgeons to cut and manipulate them to form the perfect shape.

The ink is made from hydroxyapatite, a mineral found naturally in bine, and PLGA, a polymer that binds the mineral particle together and gives the implants their elasticity. In the test, the implants healed spinal defects in rats as fast and as well as existing treatments. The team also made an implant to heal an area of damaged skull in a monkey. Shah says the material should reach in the clinic within five years.

Writing Feedback / TED Summary: Why we Need to Talk About Depression by Kevin Breel [5]

Kevin Breel, is a person who suffering depression about 6 years. He said that many people have a misconception about depression, depression is not about sad about didn't get a job which is a natural emotion. The real depression is being sad when everything seems to be alright. And every 30 second someone commits suicide because of depression.

Many people do not care about people who suffering mental illness instead of physical disease. And depression is not a kind of disease which is cured and gain absolutely health, you must spend many years to deal with depression and it is not easy. Many people think depression are cured by itself because of misconception about depression and ironically, depression is the most common mental problem but the least discussed. The first thing that people can do about depression is to vanish the silence and intolerance.

Writing Feedback / Discussion: Free Trade and lack of capital, low standard products, and unskilled workers [4]

The free movement of goods across national borders has long been a controversial issue. Some people argue that it is necessary for economic growth, while others claim that it damages local industries.

Discuss both views and give your own opinion

It becomes clear that free movement goods across national borders has become common in some countries. However, it becomes controversial because this act may cause damage to local industries. Many local industries have many issues like lack of capital, low standard products, and unskilled worker. If other countries send goods which are higher quality and cheaper the local industries will hard to compete and collapse. If the government do not calculate the advantages and drawbacks carefully the free trade will trigger economic fell.

In the other hand, the free trade also has several advantages if local industries are able to send local products to other countries. For example, the big local industries will send goods to other countries with just a little cost and have bigger merit. Otherwise, if a country decided to make a free trade among other countries surely because this act has several advantages than disadvantages for the home country. A free trade generally considered will increase economic growth and as a solution to overcome rarity of general good which caused inflation.

In my opinion, I agree if the free trade occurred because it is hard to increase economic growth if government always give much protection toward local industry. For example, many local industries never think their unique product will have a customer from other countries, and the free trade will enforce them to think in the bigger way. The free trade will make local industries more competitive and force them to improve their advantage. The free trade also allows local industries to think creatively.

In conclusions, I would agree that the advantages of free trade to other countries overweight the disadvantages.

Writing Feedback / Strangers are not dangerous - we should talk to them keeping in mind cultural differences [6]

TED Summary: Why you Should Talk to Strangers by Kio Stark

In many parts of the world, people are raised to believe that stranger is dangerous. But, Kio stated that most strangers are not dangerous and we have erased the assumption and category about other people. Categorise people in physical appearance like black, white, Asian is not valid and we have seen another people as an individual.

When someone wishes talks to stranger one thing important is to realise about the culture where you live in. In several countries, people have more privacy and get annoyed if annoyed if you talk to them. In other countries, it is rude to ignore people and you should build a conversation. Kio stated that in many unwritten rules in the world maybe break rule a bit can help someone build up a conversation. Talk to a dog or baby also a kind of practice to improve your courage.

Writing Feedback / Article Summary Task 1: High-living geckos survive snowy peaks by cuddling up [2]

Unlike most geckos thrive in tropical climates, the Atlas Day Gecko has adapted to life in the mountain tops through cold winters. Abdellah Bouazza and his colleagues at Cadi Ayyad University in Morocco have been investigating how cold-blood lizard id able to survive the freezing heights. The team found this lizard emerge in the morning to bask in the sun on exposed rocks, staying glued to a rock allowed geckos to warm up.

Gecko is known to be territorial but living in a cold place seems to make them more social. Several animals are often found basking in the same spot and sharing the same shelter. Female communally lay eggs in warm crevices, which is not unique among geckos. Unfortunately, as temperature rises due to global warming, the atlas Day Gecko may no longer be the dominant species in the High Atlas

Writing Feedback / Chart analysis: the over-grazing had the biggest factor of unproductive land worldwide [2]

IELTS Writing Task 3 Why Agricultural Land Becomes Less Productive in 1990

The Charts presented main factors why agricultural land becomes less productive in three different regions during 1990. It is important to notice that over-grazing had the biggest factor of unproductive land worldwide and other factor had the smallest factor of unproductive land worldwide. Meanwhile, Europe had the biggest land degraded compared to other regions and North America had the smallest land degraded.

Overall there are 4 factors which caused unproductive land: overgrazing, deforestation, over-cultivation, and other. Overgrazing had the biggest percentage with 35% or more than one-third of total factors and other factor had the smallest percentage of 7% or less than a tenth of total factors.

Specifically, there are 3 regions: North America, Europe, and Oceania. Europe had the biggest percentage of degraded land with 23% or more than a fifth of total lands in Europe and North America had the smallest percentage of degraded land with 5% or of total lands in North America.

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Writing Feedback / TED Summary: You can Grow new Brain Cells Here How by Sandrine Thuret [2]

Many peoples think that when people became adult their brain did not produce any cells again. But Sandrine Thuret, a neuroscientist stated that adult brain can generate new nerve cells. The part of human brain named hippocampus are responsible for learning, memory, mood and emotion. Hippocampus produces 700 new neurones per day. And then, while a human became 50 years old, all their neurone cells are exchanged with the hippocampus.

Otherwise, specific activity and behavior will increase neurogenesis or instead decreased it. Activities like study, sleep, and running will increase neurogenesis. On the contrary, activities like drink alcohol, stress, and getting old will decrease neurogenesis. And then what kind of food we eat also have contribution to increase neurogenesis or decreased it. Food like blueberries, dark chocolate, and salmon are contribute to increasing neurogenesis. Conversely, food with high fat, and ethanol will decrease neurogenesis.

Writing Feedback / Budgies reveal the rule that means birds never collide in flight [3]

How do birds avoid crashing into each other now isn't mystery again, Manydam Srinivasan, a scientist at University of Queensland Australia and his colleagues uncovered the simple trick when filming pairs of budgerigars flying towards each other in a narrow tunnel. Manydam stated that group hierarchy may determine which bird moves up and which moves down. Dominant bird tends to fly lower and probably because of more energy efficient and easier to go lower than fly higher, so the non-dominant bird forced to gain altitude.

Actually, this knowledge can provide inspiration for anti-collision systems in drones. Once the technology becomes available, drones have an ability to communicate with each other and to veer right when they encounter one another became a straightforward strategy to reduce collisions. But scientist still developing technology solutions that can achieve what birds do naturally

Writing Feedback / IELTS Writing Task 2 Proportion of Pupils Attending School Between 2000 and 2009 [4]

The table presented the comparison of Proportions of Pupils Attending Four Secondary School Types Between 2000 and 2009. It is important to notice that almost every school attendance had decreased gradually between 2000 and 2009 except community school which increased gradually between 2000 and 2009

In 2000 Voluntary-controlled Schools had the biggest percentage of school attendance with 52% or more than a half of total school attendance. The second is Grammar School with 24% or less than a quarter of total school attendance. The last, specialist Schools and Community Schools had the lowest percentage of school attendance with 12% or less than a fifth of total School attendance.

In the other hand, in 2009 Community Schools had increased significantly with 58% or more than a half of total school attendance. And Voluntary-controlled Schools had decreased gradually with 20% or a fifth of total school attendance, Grammar School also decreased gradually with 12% or less than a fifth of total school attendance. In the end, Specialist School had the lowest percentage of 10% or just one in ten of total school attendance.

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Writing Feedback / TED Summary: The Prison of your Mind by Sean Stephenson [2]

Sean Stephenson is a disabled person but he proved that physically weakness is not an excuse for not influenced many peoples. First, he taught them to never believe every prediction that doesn't empower them, Sean himself predicted by many doctors that he would be dead within 24 hours, and now he sit and inspired many peoples.

Second, never pitying yourself, he said pity is the most dangerous drugs in the world that would totally frozen your potential. Being disable does not mean you are literally disable, but the real disability is refusal to adapt. Adaptable in every conditions give many chances for you to learn with new environment and meet other people. The last, you must bullying yourself with many negative predictions, opinions that other people tell you. The best thing to do is love yourself in every conditions and love everyone because everybody need to be loved

Writing Feedback / Five Wild Lionesses grow a mane and Start Acting Like Males [2]

Five lionesses found in Botswana have grown a mane and are showing male-like behaviours. One is even roaring and mounting other females. This anomaly has started studying by Geoffrey D. Gilfillan at the University of Sussex in Falmer UK, and he stated that lioness is mostly female in behaviour and she also has some male behaviours, such as increased scent-marking and roaring.

Luke Hunter, president and chief at global wild cat conservation explained that a maned lioness is caused by increased level of testosterone and high levels of testosterone due to a problem in her ovaries. While some manned lioness is observed mating, none of them became pregnant. The test revealed high levels of androgens such as testosterone in females. Hunter says that must be a genetic component in this population underlying the phenomenon.

Writing Feedback / The water usage in California had the biggest percentage in the residential sector [2]

The charts present water usage in San Diego, California and the rest of the world. It is important to notice that water usage in both San Diego County and California had the biggest percentage in the residential sector. Meanwhile, the water usage in industry sector had the lowest percentage in both territories

Overall there are 2 territories: San Diego and California and will be the rest of the world. In San Diego County, the residential sector had the significant proportion with 60% or about three-fifth from total water usage, and the agriculture sector had a minority with 17% or just less than a fifth from total water usage. Meanwhile, in California, the residential sector also had a significant proportion of 39% or about more than a third of total water usage and the agriculture sector had a minority with 28% or about more than a quarter of total water usage.

On the other hand, the agriculture had the significant proportion of worldwide sectors with 69% or more than two-thirds of total water usage in the world. And, the residential sector only had a minority with 8% or less than one in ten of total water usage in the world.

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Writing Feedback / IELTS Article Writing Task 1 Refugee Fence and Solar Plant May Wipe Out One of the Rarest Mammals [2]

Last week, Hungarian conservationist started to relocate Vojvodina mole rats as part of an effort to relocate them to safety. Vojvodina mole rats are very rare species with around 400 individuals left in the world and inhabit only in Hungary and the province of Vojvodina in Northen Serbia. Hungarian government are planned to build a new solar power plant outside the Kiskunsagi National Park where some of mole rat population live.

Otherwise, Hungarian government erected a fence to deter refugees from entering the country. The fence could physically isolate the mole rat population in half and will speed up its extinction. To overcome this problem, the rangers already build an artificial burrow half a meter below the surface. meanwhile, conservationist are lobbying the government to restrict development of the solar plant on the site of the largest mole-rat population.

Writing Feedback / TED Summary : Let's Teach for Mastery by Sal Khan [11]

Salman Khan criticizes the traditional academic model when the teacher gives many homework to students and teacher judge the student based on the score they get. In real life, the traditional academic model is unacceptable. For example, when a contractor gives an order to workers for build a foundation, and he said "do it as you can" and when the workers did not give the best result the contractor just give a bad score to them.

Salman Khan stated that traditional academic model constructs a pyramid society, while in a base of the pyramid there are many people for human labor purposes. In the middle of the pyramid is consist of information processing or bureaucracy class, and top of the pyramid are consist of capital owner or entrepreneurs. In communication era, many people have access to information but the majority didn't participate in technology. Meanwhile, just fewer people know how to operate a technology or do something aspirational.

Writing Feedback / Someland's main exports in 2005, 2015 and predictions for 2025 [2]

The chart presented Someland's main exports in 2005, 2015 and predictions for 2025. Overall, the meat products had the lowest percentage of incomes and decrease gradually between 2005 and 2015 while dairy product had the highest percentage of incomes and increase gradually between 2005 and 2015.

There are 2 categories of product: Meat Products, and Dairy Products and 1 kind of service: International tourism. It is important to noticed that meat product had the highest income in 2005 with 4 billion USD but decrease 0,5 billion in 2015 and will be predicted decreased 0,5 billion in 2025. Meanwhile dairy products had 5 billion USD in 2005 and reach a high of 8 billion USD in 2015 and will be predicted decreased 0,5 billion USD in 2025. And the other hand, from service incomes, the international tourism had 6,5 billion USD in 2005 and increased steadily at 7 billion USD in 2005 and will be predicted still increase steadily at 8 billion USD.

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