Current Event Summaries by Tanner S.

7 Responses to Current Event Summaries by Tanner S.

  1. Tanner Samyn says:

    Title: Extinction of Icelandic walrus coincides with Norse settlement
    Author(s): University of Copenhagen The Faculty of Health and Medical Sciences
    Published by: Science Daily
    Date: September 13, 2019

    Article Summary: Scientist from Denmark, Holland, and Iceland collaborated to research the disappearance of Icelandic walruses. The scientist used the methods of ancient DNA analyzation and C14 dating in their studies. Using C14 dating, they were able to discover that Icelandic walruses went extinct during the Settlement and Commonwealth period or 870-1262 AD. The walruses went extinct due to the high demand there was for their Ivory. Walrus Ivory was very luxurious during medieval Europe and the Viking age. Walruses were most likely hunted to extinction by humans for trade. This makes the Icelandic walruses one of the earliest representations of overexploitation by humans on marine biology.

    Personal Reaction: I think that the research used for this is very important and can help find the cause for extinction for more animals. Ancient DNA analyzation and C14 dating can help scientist find out when a certain animal was living and when they started to go extinct. This research can also help prevent extinction in animals today by finding out the cause of extinction in the past and helping us find ways to prevent it from happening again.

  2. Tanner Samyn says:

    Title: Why is Earth so biologically diverse? Mountains hold the answer
    Published by: Science Daily
    Date: September 12, 2019

    Article Summary: Tropic Mountain Ranges are home to some of the most widely diverse things in the world, ranging from plants to animals. Tropic mountain ranges consist of 85% of the total amount of amphibians, mammals and birds in the world. Scientists have made one hypothesis that says that since the mountain came from the bedrock that used to be oceanic crust, species were able to adapt and evolve to the environment over time. Thus providing them to live in the complex climate.

    Personal Reaction: I think that they can make this science very useful. They could use it to help understand why animals are the way they are and understand the events in the geological structure that led to them adapting to it.

  3. Tanner Samyn says:

    Title: New insight as to how cells maintain their identity
    Published by: Science Daily
    Date: September 20, 2019

    Article Summary: Scientist researched how cells are able to maintain their Identity. They found that a complex protein called PRC2 is responsible for turning on and off specific genes. PRC2 is able to do this by binding with the specific genome that it needs to turn off or on. PRC2 has six associated proteins that are responsible for helping it bind with a genome. Scientists conducted experiments where they extracted each of the associated proteins one by one and found that PRC2 was still able to bind with genomes as long as there was one associated protein with it. However, when there were no associated proteins present, PRC2 was not able to bind with specific genomes. Scientists believe that if they can learn how to manipulate PRC2, they can help find solutions to problems in the body such as various types of cancer.

    Personal Reaction: I believe that if scientists can figure out how to manipulate which genes are turned on and off, they can help find solutions to a lot of problems in today’s world. They could also go deeper into their research and try to find out why PRC2 is responsible for it, and why it isn’t another complex protein. They can also research specifically what PRC2 does to activate or deactivate a gene.

  4. Tanner Samyn says:

    Title: Ultrasound can reveal gene expression in the body
    Published by: Science Daily
    Date: September 28, 2019

    Article Summary: Scientists use reporter proteins to monitor the genetic expressions inside of cells by injecting those proteins with GFP which glows bright green whenever activated. One problem was that the GFP was not visible deep inside of the cell. A group of scientists has created a new type of reporter gene that allows you to see deep inside the cell using ultrasound. They created a protein that is mammalia injected with bacteria genes. These genes light up whenever the specific genetic program is activated, making it visible to ultrasound. Scientists believe that this can be used to study the genetic expressions in tumors and other types of cells inside living things.

    Personal Reaction: This relates to the unit of cells because it is about monitoring the ways the genes inside the cells interact with each other. This can be very helpful by studying the ways that tumors interact within itself so that maybe we can figure out how to get rid of them. We can also figure out how the genes in cancer interact and how to stop them.

  5. Tanner Samyn says:

    Title: Wild animals’ immune systems decline with age, sheep study finds
    Published by: Science Daily
    Date: September 19, 2019

    Article Summary: Scientist has found the first link between a decline in immune system function and survival in the wild. They used blood samples from Soay Sheep from 1990 to 2015 to observe the change in their immune system after introducing them to a worm parasite that lives in their stomachs. 800 out of 2000 showed signs of deterioration over time. Those 800 were more likely to die in the winter following. The team of scientists believes that this closely resembles the humans’ decline in the ability to fight off lager parasites later in life.

    Personal Reaction: I believe that the science used in the studies of the Soay sheep’s immune system can be very important by shining light on possible problems that could arise in the human immune system. Scientists could also use the sheep for experiments on how to slow declining immune systems with age. They could also use methods like this to study what happens to the brain of a group of animals over time when exposed to some other factor that could alter their brain activity and using the findings to help prevent the same thing from happening to humans.

  6. Tanner Samyn says:

    Icelandic Walruses: The article over the extinction of the Icelandic Walruses relates to the Unit over the laws of Science because the believed reasoning behind the extinction is mass hunting for marketing purposes. However, this could change over time as new information is learned through C14 dating.
    Mountain Range Biodiversity: The article over the reason behind the biodiversity of tropical mountain ranges relates to the Unit of the Laws of Science because Scientist says that animals adapted and evolved as the environment and the shape of the mountains formed around them. They used the data collected for tests to come up with this theory. However as new data is collected over time, the theory could change to fit the new reality.
    Human Cell Identity: The article over how cells are able to maintain the identity relates to the unit over the different parts of the cells because PRC2 is the part of the cell that is responsible for activating and deactivating genes in order to keep the identity of the cell.
    Ultrasound Gene Expression: The article over the expressions of genes related to the unit over the laws of science because the method being used to research gene expression is still fairly new and it is possible that a new method to study gene expression could be made. This new method could show data that contradicts with GFP is telling us today.
    Wild Animals Immune System Declines with Age: The article over the decline of immune system function in the wild relating to the growing of age relates to the unit of law of science because scientists are still uncertain on with the immune system declines as wild animals get older but they are conducting experiments to try to figure out why this happens.

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