Author Archives: mokhan90

Talking Elephant

Most people have heard a parrot imitate human language, but other than that, has anyone even imagined a talking elephant? Neither did the elephant trainer in Everland, an amusement park in Seoul, Korea when he first heard someone talking in an elephant cage, where no one was inside… Except Koshik, a 16-year-old elephant. This asian elephant was first heard “talking” in Korean words in 2006, but only recently has the research begun to find out why and how human words are produced from this unusual source. The researchers believe that Koshik was able to mimic the sound of Korean language by close interaction with the trainer throughout his juvenile days, when he was the only elephant in Everland. The team say that the juvenile ages for elephants are crucial for the their social behaviour and development, but since all he got to bond with was his trainer, he ended up with this fascinating trait.

Koshik’s vocabulary consists of five Korean words, “annyong,” “anja,” “nuo,” “choa” and “aniya”, meaning “hello,” “sit,” “lie down,” “good” and “no.” These words Koshik was able to produce were the most common words said by the elephant trainer, backing up the evidence that Koshik was able to make these sounds due to very close human interaction. He wasn’t the only elephant claimed to produce human speech, as there was an elephant that apparently could produce Russian words, but it was never scientifically investigated.

What is really interesting about Koshik is that, elephants, can not morphologically “say” those words that he is producing. Elephants have trunks, instead of lips, so they can not produce any pronunciation. They also have long larynx, only able to create a low-pitch noise. Koshik, however puts trunk in his mouth to produce this sound. Angela Stoeger, a head researcher says that it is very surprising to see that Koshik is able match both pitch and timbre of human voice, which are the two most important aspects. The accuracy of the pronunciation was confirmed by native Korean speakers writing down what they heard on the recorded playback.

Koshik’s new language skill, not yet used by any other elephants lead to a very important insight as Stoeger and her researchers dig deeper as how exactly this elephant is able to make this sound, why this elephant decided to do so, and his remarkable intelligence.

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Mokhan Kim

Toxic Algae Blooms

Water, which is a key necessity, is facing a global threat as environmental problems are causing estuaries and freshwater aquatic systems to be full of harmful substances. Not only does pollution of water by human and chemical waste itself contaminate the water sources, but also encourages the growth of algal blooms. Not all algal blooms are harmful, but some blooms containing cyanobacteria, like blue-green algae are extremely harmful, and can release many harmful chemicals such as hepatotoxins, dermatoxins, and neurotoxins. Limiting nutrients in water sources are causing these algae to flourish and they are currently destroying much useable and drinkable water for humans on a global scale. Recently this summer, toxic algal blooms were found in Loughbrickland Lake in County Down and Moor Lough in County Tyrone in Northern Ireland. Although they were not used for drinking water for the locals, they were popular for fishing and leisure activities, which can be devastating since these lethal toxins could be ingested by fish, and then consumed by those who caught them. Not only them but also people could have easily drank water while engaging in leisure activities.

Blue-green algal bloom
Image from Wikipedia

Scientists from University of Ulster are working to develop clean technology to clear the pollutants by titanium dioxide, which is a common chemical found in sunscreen. When applied to skin and under light intensity of sunlight, it protects the skin by refracting the light and efficiently transforming the UV light into heat. When under high intensity of UV light, however, “it turns into a very strong catalyst, capable of destroying pollutants in the water,” says Tony Byrne, a leading scientist of the research team. By doing so, Tony and his team are promoting clean technology, using little energy for good results, allowing this excited titanium dioxide to efficiently clean the water.

Using titanium dioxide and UV light to destroy the pollutants in the water seemed to be a very good idea. Many water sources including metro Vancouver’s tap water, which the majority of the people drink, is also disinfected with UV light before being transferred to each household; therefore, using this new technology and method sounds like a great way to prevent any pollutant and algae-bloom matters.

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Mokhan Kim

 

Pain Relieving Naked Mole-rats

Who cares about naked mole-rats? Just like the name, the appearance of these creatures are neither charming nor appealing. Most people have known this type of rodent as hideous creatures thats not really special.

Naked mole-rats Image from Science Daily

Who cares about these rats and why would they be? Well, Thomas Park of University of Illinois at Chicago (UIC) does and maybe a lot more people should start giving more attention and interest in these rats. A new study explores a way to use a characteristics of these rodents to help pain relief in humans or other mammals.

 

The naked mole-rats carry a very unique set of characteristics. They are the only mammals that are cold-blooded and they have very slow metabolism. What’s really interesting is that they can easily tolerate and roam in places with toxic levels of carbon dioxide or other mammals. Their natural habitats are underground tunnels and burrows where a lot of these rats are tightly packed together and as a result, the carbon dioxide levels quickly builds up, reaching a point where no other mammals, especially humans can tolerate. These creatures, however, could care less, since they are resistant to hypoxia, meaning that they can survive a condition with very little oxygen reaching brain and tissue cells. They can even stay in a condition where there is no oxygen for more than 30 minutes. This is an intriguing fact, considering that they are mammals just like humans.

The research is being done to discover a way to use this characteristics to relieve pain in human. Basically in humans and other most types of mammals, pain is  derived from acidification of the injured tissues and since these mole-rats do not feel pain from acidic conditions produced by high carbon dioxide levels, they can be the source of alleviating pain for humans as well. In the experiment Park conducted, where the naked mole-rats were put in cages where some parts of the cages were highly acidic, the rats showed no sign of discomfort in the parts where rats, mice and other species of mole-rats quickly ran off from. No activity of the nerve fibres stimulating the physical and behavioural activity to protect the organism from brain or tissue damage was found.

Not only do these mole-rats potentially hold the key to pain relief, they might also hold clues to preventing brain damage in humans while very little oxygen is carried to the brain, such as during stroke or heart attack.  Although there has not been a great way to finding such methods from these naked mole-rats, innovative medicinal improvements would be created to alleviate the pain of the injured and preventing major brain damage during heart attack.

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Mokhan Kim