Wednesday, May 19, 2010

Cows on Drugs



http://www.youtube.com/watch?v=Dmg_yggrgVM

Key Ideas:

  • In 2005, one class of antibiotics, fluoroquinolones, was banned in the production of poultry in the United States, but the total number of antibiotics used in agriculture is continuing to grow.
  • Many associations are urging Congress to phase out the nontherapeutic use in livestock of antibiotics that are important to humans.
  • Congress should now pass the Preservation of Antibiotics for Medical Treatment Act, which would ban industrial farms from using seven classes of antibiotics that are important to human health under certain conditions.
  • The pharmaceutical industry and agribusiness face the difficult challenge of developing antimicrobials that work specifically against animal infections without undermining the fight against bacteria that cause disease in humans.
Reflection:
I thought this article was hard to read because it didn't hold my attention for long. It is an interesting topic, but the the author used too many long words that made the article draw out longer. It was about trying to stop people from giving human antibiotics to animals to improve their production. I think this is important that this should be done so that people won't get sick as much and there won't be as many deaths from antibiotic poisoning from animals. This course helped me to understand this topic because we studied genetically modified organisms.

MLA: Kennedy, Donald. "Cows on Drugs."
The New York Times - Breaking News, World News & Multimedia. 12 May 2010. Web. http://www.nytimes.com/2010/04/18/opinion/18kennedy.html.

Tuesday, May 18, 2010

EXPERT ASSESSMENT - Law Seeks to Ban Misuse of Genetic Testing

PART ONE: ARTICLE SUMMARY

Key Ideas:

  • A new law, the Genetic Information Nondiscrimination Act, will take effect in the nation’s workplaces on Nov. 21, 2009 for employers with 15 or more employees.
  • This law prohibits employers from requesting genetic testing or considering someone’s genetic background in hiring, firing or promotions and health insurers from requiring such testing or using genetic information to deny coverage or set deductibles.
  • Genetic tests help determine whether someone is at risk of developing an inherited disease or medical condition.
  • Congress passed the new law last year because many Americans feared that their employers would discriminate against them because of their genetic history.
  • The act includes a “water cooler” exception, as in a case where a manager overhears one employee telling another that his father had a stroke.
This course prepared me to better understand this article through our course on genetics. We studied that people inherit their genes and DNA from their parents. Some people also inherit certain tendencies of getting diseases easier than someone else might get the disease. Also, people's genetics can help to determine a person's occupation, like if certain working conditions would cause severe health problems for a certain person.

People, Agencies, etc.
  • John C. Stivarius Jr.
  • J. D. Piro, a principal in the Health Care Law Group at Hewitt Associates
  • Peggy R. Mastroianni, associate legal counsel for the Equal Employment Opportunity Commission
  • Christopher Kuczynski, assistant legal counsel with the commission
  • Sharon F. Terry, chairwoman of the Coalition for Genetic Fairness
  • Burlington Northern and Santa Fe Railway Company
  • David Escher
  • Michael P. Aitken, director of governmental affairs for the Society of Human Resource Management
  • Mr. Stivarius, the Atlanta lawyer
  • Susan Pisano, a spokeswoman for America's Health Insurance Plans

Type of Article:

This article is none of those listed on the sheet. Instead, it is a report on a new law passed. This law prohibits employers from testing their employees' genetic histories. This article is from November of 2009, so it is currently in effect.

MLA: Greenhouse, Steven. "The New York Times." New York Times 16 Nov. 2009: B5. The New York Times - Breaking News, World News & Multimedia. 15 Nov. 2009. Web. http://www.nytimes.com/2009/11/16/business/16genes.html.



PART TWO: BACKGROUND RESEARCH

Article #1: Conn. woman alleges genetic discrimination at work
MLA: Reitz, Stephanie. "The Associated Press: Conn. Woman Alleges Genetic Discrimination at Work." Google. 28 Apr. 2010. Web. http://www.google.com/hostednews/ap/article/ALeqM5idLXFbznBv57CnEMaLryCjkfjAgQD9FCA2T80.

Summary:
This article is about a Connecticut woman who had a voluntary double mastectomy after genetic testing. She is alleging her employer of eliminating her job after learning she carried a gene implicated in breast cancer. Her complaints are among the first known to be filed nationwide based on the federal Genetic Information Nondiscrimination Act. Pamela Fink told her bosses at MXenergy about her genetic tests and the surgery, and then they fired her. She said her job was eliminated — the only one in her department — and she was escorted out in March, about six weeks after she returned from her second surgery. Catherine Barbieri, a Philadelphia attorney specializing in anti-discrimination employment law, said the Connecticut case is the first she's heard about nationwide that cites the genetic tests law. This is totally wrong of companies to do. Judging people by their genetic background is just as bad as being racist or sexist. The Genetic Information Nondiscrimination Act has been applied for one of the first times.


Article #2: Discrimination Claims Rising in Wake of Genetic Bias Law
MLA: Greenwald, Judy. "Discrimination Claims Rising in Wake of Genetic Bias Law " Business Insurance News, Analysis & Articles. May 2010. Web. http://www.businessinsurance.com/article/20100516/ISSUE01/305169979.

Summary:
This article is about more lawsuits involving the Genetic Information Nondiscrimination Act. Even after knowing about the law, many companies continued to perform genetic tests on their employees. It says that the Equal Employment Opportunity Committee is expected to issue final rules in connection with GINA soon. So far, the EEOC has received about 80 GINA-related claims. They expect to receive a huge wave of complaints relating to infractions of the GINA by companies who continue to perform genetic tests on their employees. Employees aren't the only victims in this situation -- employers have to be careful about being set up by their employees volunteering genetic information and then alleging that was the cause of a subsequent adverse job action. The EEOC is being very proactive in their efforts in pursuing claims that they can control. Since the law passed during a period of economic turmoil, employers haven't put much emphasis on it. Employers need to be more careful in their pursuits to genetically test their employees, while employees need to be more careful in letting information slip about their genetic history.



PART THREE: ANALYSIS OF POTENTIAL BIAS

1. Bias through selection and omission

This article selected to write from the standpoint of the victims -- the people. It portrays the employers as the ones causing all the lawsuits. However, that is not always the case. The employees sometimes let on a little too much about their genetic history, and they give their employers reason to test them and fire them. This article shows the companies as greedy when the "boss [says] the company could not afford to keep [an employee] if the results were positive." That's just not fair.

2. Bias through placement

This article focused on the positive effects caused by this law. It talked about how it prevents unfair treatment of employees with certain genetic backgrounds. There really aren't any negative effects of this law, and the article proved that by talking about how more people would be able to keep their jobs. Even though the law has many positive effects, we are yet to find out if there are any negative things about it.

3. Bias by headline

The headline of this article accurately summarizes this article. It approves of the law, and shows that genetic testing is being misused by people. It is a very biased headline, implying that the law will be great for all people because they will not have to be discriminated against because of their genetic background.

4. Bias by photos, captions, and camera angles

There is one picture included in this article. It shows a man who got let go from his job because his employer found out that he had developed carpal tunnel syndrome. The picture portrays the man with a smile on his face, but it doesn't look real. There seems to be some worry in his eyes. His pose looks fixed and un-humanlike as well.

5. Bias through use of names and titles

This article does not use specific names to degrade certain people. The writer of this story used average people and large companies to get his point across. It was almost as if the writer was channeling his inner child when he makes it seem like the company/employer as the bully and the employee as the defenseless child.

6. Bias through statistics and crowd counts

This article gives this statistic: "In a nationwide survey, 63 percent of respondents said they would not have genetic testing if the employers could see the results." This statistic is biased in the number it gives. The writer is the only person who knows what the percent of the statistic is, so it could be higher or lower. This statistic doesn't seem too biased though because the number is reasonable -- it is a majority, but not overpowered by the minority. If people see that stat, they will think they need to support the cause so the number will go up for of fear of defeat.

7.Bias by source control

This story comes from the New York Times, which is a highly regarded newspaper source. I haven't heard the name of this author many times before, so he may have used too much opinion in this article. This author was most likely briefed on the story then told to write a story on it. During his briefing, he was probably introduced to bias that supports the law. Therefore, his sources are biased towards supporting the new law, and his story was based upon that bias.

8.Bias by word choice and tone

This author uses promotive and positive words when talking about the law. He also uses this type of words when talking about supporting the employees. He uses degrading and negative words when talking about the companies and employers conducting the genetic tests. The author wants the reader to take caution with their employers and cautions them to avoid the kinds of situations when they have to get tested for their genetic background.

Speed Reading of DNA May Help Cancer Treatment



http://www.cbsnews.com/video/watch/?id=4580875n


Key Ideas:
  • Researchers at Johns Hopkins University have developed a way to monitor the progress of a patient’s cancer treatment using a new technique for sequencing large amounts of DNA.
  • The DNA rearrangements are unique to cancer cells, making them a very specific marker.
  • More than 80 percent of cancers had mutations in their mitochondrial DNA.
  • The proportion of variant mitochondrial DNA in healthy people tended to vary quite widely from one kind of tissue to another.
  • If two mitochondrial DNA sequences differ by a single unit, current guidelines require the analyst to report the comparison as inconclusive.
Reflection:
I thought this article was pretty boring. Even though it is a scientific breakthrough, I feel like there are too many. I mean, it's cool that science has come so far, but something seems off. It's good that these scientists are relating their discoveries to outside of the scientific world and using them to further research in other areas. By doing this, ideas get passed back and forth, and that will most likely lead to another discovery. The cycle seems like it's unending. This course helped me to understand this topic because we studied DNA and cancer.

MLA: Wade, Nicholas. "Speed Reading of DNA May Help Cancer Treatment." The New York Times - Breaking News, World News & Multimedia. 08 Mar. 2010. Web. http://www.nytimes.com/2010/03/09/science/09gene.html.

Monday, May 17, 2010

White Lizards Evolve in New Mexico Dunes


http://c0508042.cdn.cloudfiles.rackspacecloud.com/100105Lizard.jpg

Key Ideas:
  • Erica Bree Rosenblum's focus is on three lizard species that elsewhere are dark skinned but in White Sands have each evolved a white-skinned variety that makes them hard to find.
  • In at least two of the lizard species, the researchers found that mutations on the same gene, linked to the production of skin pigment, were responsible.
  • In the two of the lizard species, mutations on the same gene, linked to the production of skin pigment, were responsible.
  • In the two species, there are two molecular mechanisms. In one, the mutation has made the white-skinned trait dominant; in the other, the mutation has made it recessive.
Reflection:
I think that this article wasn't uninteresting, but it wasn't interesting either. I find it pretty amazing that this lizard could drastically change colors like that. I don't think a human could go through a change like that. If that happened, all humans would constantly be changing skin colors depending on where they live. That would be quite weird. There is an allele interaction that causes the lizards skin color to change - dominant/recessive. The skin pigment is an evolutionary trait that is a part of survival of the fittest. This course helped me to understand this topic because we studied evolution.

MLA:Fountain, Henry. "White Lizards Evolve in New Mexico Dunes." The New York Times - Breaking News, World News & Multimedia. 4 Jan. 2010. Web. http://www.nytimes.com/2010/01/05/science/05oblizard.html.

Gladwell Digs into Cancer Drug Research Difficulties


http://blogs.wsj.com/health/2010/05/10/gladwell-digs-into-cancer-drug-research-difficulties/?KEYWORDS=cancer

Key Ideas:
  • 90% of the drugs studied in humans to fight cancer show no difference between the control and treatment arms.
  • Malcolm Gladwell points out that given the pitfalls of cancer drug development, a “master code behind the disease” may not be waiting to be cracked.
  • The drug, which causes cancer cells so much oxidative stress that they die, showed promise in the lab.
  • The company recently announced that the FDA has allowed it to resume clinical development of elesclomol.
  • Gladwell has to work backward to find a solution, and that will be difficult because he does not have an understanding of cancer, just like other scientists.
Reflection:
I found the statistic given at the beginning of the article to be surprising. If there was a choice t have your disease treated or controlled, and chose to have it treated, it's sort of a waste because the two drugs are the same. I think its important that someone is looking for a solution to the problem of cancer. Drugs can only help a person fight the disease for so long, because there is no sure cure for the disease. The FDA shouldn't have approved the development of elesclomol because it will be harmful to the people who put that into their bodies.This course helped me to understand this topic because we studied cancer.

MLA: Hobson, Katherine. "Gladwell Digs into Cancer Drug Research Difficulties - Health Blog - WSJ." WSJ Blogs - WSJ. Wall Street Journal, 10 May 2010. Web. http://blogs.wsj.com/health/2010/05/10/gladwell-digs-into-cancer-drug-research-difficulties/?KEYWORDS=cancer.

University of Bristol scientists DNA test unique tree



http://news.bbc.co.uk/local/bristol/hi/people_and_places/nature/newsid_8620000/8620605.stm

Key Ideas:
  • Scientists from the University of Bristol have used genetics to explain the evolution of a unique tree species that is only found in Avon Gorge.
  • By studying the trees' DNA, the Professor Hiscox and his team showed that these trees are cross-breeding with each other, and these hybrids reproduce asexually, in an ongoing process that adds to the diversity of Sorbus trees found in the gorge.
  • Professor Hiscock said: "The Sorbus tree breeding system plays a critical role in determining the likelihood of their long-term survival."
  • Their findings are helping to guide the work of Avon Gorge and Downs Wildlife Project and the National Trust to aid the conservation of these rare species.
  • The identification and preservation of such dynamic evolutionary processes will be essential for maintaining biodiversity.
Reflection:
This article was about the Sorbus tree that produces asexually. It is only found in one city in Britain which it pretty cool. These trees cross-breed with each other, and these hybrids then reproduce asexually to create diversity. It seems as if these trees are altering the evolutionary process to adapt to their environmental conditions. By altering the evolutionary process, this species of tree manages to survive in one environment that goes unchanging most of the time. I find that interesting because all other organisms have to adapt to their surroundings while this one does not. This course helped me to understand this topic because we studied DNA in the genetics unit and evolution.

MLA: "BBC - University of Bristol Scientists DNA Test Unique Tree." BBC NEWS | News Front Page. Bristol University, 14 Apr. 2010. Web. http://news.bbc.co.uk/local/bristol/hi/people_and_places/nature/newsid_8620000/8620605.stm.

Portrait in DNA: Can forensic analysis yield police-style sketches of suspects?



http://www.youtube.com/watch?v=SlZ5bF3opQ4

Key Ideas:
  • The analysis marks the first full sequencing of an ancient human genome and offers an example of how much detectives can discover just from a suspect’s genetic code.
  • The researchers resolved a debate about the origins of Greenland’s paleo-Eskimos by showing he had a pattern of DNA variations most common in Siberian population groups.
  • Having more to go on than ancestry is the goal of some programs that fund research into alternative genetic markers for forensic use.
  • An important feature in profiling has hereditary roots but also depends on environmental factors, such as nutrition during childhood.
  • Skin-deep is as far as a DNA sketch should go, according to some bioethicists.
Reflection:
I think this article was pretty interesting to read. Using DNA to help solve forensic cases is really intense. Science truly has come such a long way and it's now used for things that used to be impossible. This article implies that DNA will continue to be useful in forensic analysis and will have an even more important role in the future. This article makes me wonder what will happen in the future. Because scientific technology has developed so much in a span of 10 years, we can only imagine how much more will be developed in another 10 years. This course helped me to understand this topic because we studied genetics and DNA.

MLA: Soares, Christine. "Portrait in DNA: Can Forensic Analysis Yield Police-style Sketches of Suspects?: Scientific American." Scientific American May 2010. Science News, Articles and Information | Scientific American. Web. http://www.scientificamerican.com/article.cfm?id=portrait-in-dna.

Sunday, May 16, 2010

High-energy X-ray confirms feathered dinosaur



http://www.sfgate.com/cgi-bin/object/article?f=/c/a/2010/05/11/BAKG1DCC9M.DTL&object=%2Fc%2Fpictures%2F2008%2F12%2F12%2Fmn-fossil13_ph2_0499555272.jpg

Key Ideas:
  • Scientists at Stanford have aimed a high-energy x-ray beam at a fossil of Archaeopteryx and have identified key chemicals in the creature's bones, wings, and in its soft tissue.
  • The scientists report they have found a powerful new tool to explore tissues long entombed in fossils of many other ancient life forms.
  • Sulfur and phosphorus were found in the feathers and zinc and copper were retained in its bones.
  • Padian said he hoped that they would be able to shine their intense light on the fossils of feathered dinosaurs discovered in China.
  • This helped to prove that dinosaurs are the ancestors of modern birds, but some argue that birds are modern dinosaurs.
Reflection:
This article helps to prove that science has come so far in the past few years. This new technology can help to solve the mysteries paleontologists have been trying to solve for years. This breakthrough is revolutionary and will be helpful for future generations. This article has implications that great things will one day be discovered, and these discoveries will unlock many secrets to the development of humans. This article was cool to read, and it will be interesting to see what other discoveries come from use of this technology. This course helped me to understand this topic because we studied evolution and fossils was a part of that unit.

MLA: "High-energy X-ray Confirms Feathered Dinosaur." San Francisco Chronicle: C-1. San Francisco Bay Area — News, Sports, Business, Entertainment, Classifieds: SFGate. 11 May 2010. Web. http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/05/11/BAKG1DCC9M.DTL&type=science

Three Approved GMO Crops Linked to Organ Damage, New Study Shows



http://www.zcommunications.org/FCKFiles/Image/McMillan-Monsanto-Big.jpg

Key Ideas:
  • A new study shows that three variations of GM corn are linked to organ damage in mammals.
  • The three varieties in question are Mon 810, Mon 863, and NK 603 - all of which are Monsanto products.
  • Each of the three strains produced differing amounts of adverse impact, but the impact on vital organs was universal for all three GM crops.
  • Monsanto didn't follow the standard protocol when carrying out their studies, so some controversy emerged from the results of the tests.
  • CRIIGEN says that these crops are very dangerous and should be banned from import and export.
Reflection:
I chose this story because I think that the subject of GMOs is a controversial issue that should be discussed. I believe that these chemicals should not be used at all. In fact, I believe that all foods shouldn't be genetically modified at all, except in trying to feed those people who are malnourished in places like Africa. Even in those instances, tests should be conducted to make sure that they will not harm them. This story implies that people could be seriously internally damaged if something isn't done about this soon. Also, people should be more careful in choosing what they do and do not eat. I'm going to try to make better decisions with what I eat from now on. No person should have to suffer on account of a company trying to make a profit. This course helped me to understand this topic because we studied GMOs.

MLA: Turpan, Aaron. "Three Approved GMO Crops Linked to Organ Damage, New Study Shows." Independent News on Natural Health, Nutrition and More. 13 Jan. 2010. Web. http://www.NaturalNews.com/027931_GMO_crops_organ_damage.html.

Tuesday, April 27, 2010

Cancer Fight: Unclear Tests for New Drug



http://www.youtube.com/watch?v=48VSU4AZ-L0&feature=player_embedded

Key Ideas:
  • Dr. Griffith had a test to see whether her tumor had extra copies of a protein, HER2 and if it did, it would respond to a drug, Herceptin, which blocks the protein and stymies the tumor’s growth.
  • Drugs aimed at disabling proteins that spur cancer are the future of cancer therapies.
  • Herceptin, costing $42,000 a year wholesale, causes flulike symptoms and also has a rare, serious side effect: severe heart damage that can be fatal.
  • HER2 tests, can give false-positives up to 20 percent of the time, the tests can tell women they need the drug when they do not, and 5 to 10 percent of the time, the tests can tell a woman that she should not take the drug, when she should.
  • Medical experts's best advice is for women to ask that their breast cancer tissue be sent to experienced labs that follow certain procedures
Reflection

I think this story jumped out at me because it has to do with breast cancer. Breast cancer jumped out at me because breast cancer has been genetically passed down through generations on my dad's side of the family. I really hope I do not get it, but if I do feel a lump, I know to get tested as soon as possible. I am now better educated on which decision to make. I now know that taking the Herceptin can cause great harm to my body, and that it most likely isn't the way to go, especially if the tests are very inconsistent. The woman in the story made an educated decision by not taking the drug and going with an alternative route: chemotherapy. This article was interesting to read about, and I hope that medical advances are made to help with the fight against breast cancer. This course helped me to understand this topic because we studied cancer.

MLA: Kolata, Gina. "Cancer Fight: Unclear Tests for New Drug." New York Times. 20 Apr. 2010. Web. http://www.nytimes.com/2010/04/20/health/research/20cancer.html.

Sunday, April 18, 2010

Genetic Breast Cancer Testing Brings Controversy



http://www.youtube.com/watch?v=3Fd5DPW8U9U&feature=player_embedded

Key Ideas:

  • NewsCenter 5's medical editor Dr. Timothy Johnson reported that testing positive for the BRCA 1 or 2 gene can be devastating news
  • A positive test result can force women to make terribly difficult decisions. Some choose to have a prophylactic double mastectomy and remove their ovaries to significantly lower their risk.
  • Judy Garber, a genetics specialist at the Dana-Farber Cancer Institute, said not all patients should have BRACAnalysis.
  • Even if the test comes back negative, women are not off the hook because only a small percentage of cancers have a genetic cause.
  • Even if the test is positive, the chance that your child will also be a carrier is 50/50.

Reflection

I chose this story because breast cancer has been passed on from generation to generation on my dad’s side of the family, so it has a special meaning to me. It was interesting to learn about because I now know to talk to a specialist in breast cancer if I am ever diagnosed with it when I get older. This story was about a woman who was diagnosed with breast cancer and how she reacted to it. She felt the lump when she was breastfeeding her son, and she was devastated by the news. If a person was diagnosed with breast cancer, this says that they should talk to a specialist about having a genetic test. If they follow through with the testing, they should be informed about the risks that go along with it. This course helped me to understand this topic because we studied cancer.

MLA: "Genetic Breast Cancer Testing Brings Controversy - Health News Story - WCVB Boston." Boston News, Massachusetts News, Weather & Sports, Channel 5 TV - WCVB TheBostonChannel.com. 9 & 10 Oct. 2007. Web. http://www.thebostonchannel.com/health/14300655/detail.html.

Monsanto's Legal Wins Are Just the Beginning



http://www.youtube.com/watch?v=b7bF0UXg2X4&feature=player_embedded

Key Ideas:

  • Monsanto got a favorable ruling in its dispute with rival DuPont on Friday when a judge ruled that DuPont's new line of seeds violates its licensing contract with Monsanto.
  • DuPont licensed Monsanto's Roundup Ready trait, but the terms of the contract preclude DuPont from combining the trait with herbicide-resistant.
  • Monsanto is developing a super corn but doesn't want rivals combining their herbicide-resistant traits with Roundup Ready.
  • Monsanto's other win on Friday came when the Supreme Court agreed to review a case in which a lower court ruled that the U.S. government couldn't approve Monsanto's genetically modified alfalfa without conducting an environmental review.
  • A win in front of the Supreme Court could help Monsanto get its products on the market sooner, but it could also help rivals if environmental requirements are relaxed.

Reflection

I chose this particular story because I recognized the name Monsanto from the “Harvest of Fear” video, and I wanted to see what has been happening to Monsanto recently. This story can imply that Monsanto has plans for the future, and that genetically modified foods might become more prevalent in the world. The Supreme Court was a part of this issue, and I found that interesting because I didn’t know that genetic modifications were that big of a deal until I watched the video and read this article. I’m kind of surprised because this topic fascinates me more than I expected, and it makes me think twice before buying certain foods. This course helped me to understand this topic because we studied GMOs and Monsanto is one of the leading companies in GM crops and foods.

MLA: Orelli, Brian. "Monsanto's Legal Wins Are Just The Beginning." Latest Top Stories ./news.nabou.com. 19 Jan. 2010. Web. http://news.nabou.com/cgi-bin/newsframe/437892yks4328903Dnabou2BInews421789994asgw3798etys6787/18A8047A97056E4D9B2CDA039BFF5E58backheadline3DHow2Bdo2BI2Bcut2Ba2Boout3Fnews26o3D0/FrameIt.cgi?Url=http://c.moreover.com/click/here.pl?r2480645174.

Can Evolution Run in Reverse? A Study Says It’s a One-Way Street



http://www.youtube.com/watch?v=YEdm1GoUo-o&feature=player_embedded

KEY IDEAS:

· Evolutionary biologists have long wondered if history can run backward.

· So far, they say that it cannot happen because mutations make it practically impossible for evolution to reverse direction.

· Some scientists took a close look at the possibility of reverse evolution at a molecular level by studying a protein called a glucocorticoid receptor that helps humans cope with stress.

· Evolution is not ever reversible, but it may go backward when the evolution of the trait is simple, like when a single mutation is involved. (From Dr. Thorton)

· Evolution cannot be reversed.

REFLECTION:

This article really jumped out at me. This is a question that seemed really interesting and showed that advancements in science are truly remarkable. Before I read it, I somewhat knew the answer: that evolution can’t be reversed. The evolutionary scientists in this article preformed an experiment involving proteins to see if they could reverse genetic mutations caused by evolution. They came to the conclusion that evolution really can’t be reversed, but there is a chance that the mutation may go backwards if the evolution of the trait is simple. I think it would be interesting to learn more about this subject. This course helped me to understand this topic because we studied evolution.

MLA: Zimmer, Carl. "Can Evolution Run in Reverse? A Study Says It’s a One-Way Street." The New York Times - Breaking News, World News & Multimedia. 28 Sept. 2009. Web. http://www.nytimes.com/2009/09/29/science/29evol.html.

Extinction nears for whales and dolphins


http://www.youtube.com/watch?v=uBi2tZGsg0E&feature=player_embedded

Key Ideas:
  • Some whales, dolphins and porpoises are now so endangered they could vanish within a decade, scientists say.
  • The warning comes from an international group of cetacean experts at IUCN-The World Conservation Union.
  • It lists the 86 recognized cetacean species, from the whales to the small and seldom-seen freshwater species in southern Asia and Latin America. The Group focuses on smaller species that are particularly threatened with extinction.
  • The baiji, a freshwater dolphin now limited to the main channel of the Yangtze river in China, is considered the most endangered cetacean.
  • Threats to cetaceans include the deliberate killing of some species for food and predator control.
  • The plan includes recommendations for action to protect some of the most threatened species.

Reflection

I thought this story was really interesting to learn about. I chose to read this story because it jumped out at me. I also think dolphins are fascinating. This story kind of hit me hard because it really showed me that animals are going extinct because of humans’ actions. Why should they suffer for our behavior? It just doesn’t make sense to me. Some of the future implications that arise from this story are that some species dolphins, whales, and porpoises will go extinct if we don’t change our way of life and that some scientists are working on a plan to protect endangered species. I was interested in this story because it is completely relevant to what’s happening in the world around me. Science is developing, but on the down side, some species of animals have the possibility of going extinct. I think that we can change things in out world if we try to. This course helped me to understand this topic because we studied extinction during the evolution unit.

MLA: Kirby, Alex. "Extinction Nears for Whales and Dolphins." BBC NEWS | News Front Page. 14 May 2003. Web. http://news.bbc.co.uk/2/hi/science/nature/3024785.stm.

Sunday, April 11, 2010

Agency Proposed U.S.-Paid Research on Stem Cells


http://www.youtube.com/watch?v=63Uqp9VcCq4&feature=player_embedded

Key Ideas
  • The National Institutes of Health is proposing to enable researchers to work with cells taken from an early human egg.
  • If the proposal gets approved, it would be among the first clinical tests of embryonic stem cells.
  • The N.I.H. proposes to approve the cell lines created from blastomeres, the cells generated after the fertilized egg’s first few divisions.
  • Researchers at Advanced Cell Technology have learned how to convert embryonic stem cells from blastomeres into the special cells that form the basement of the retina.
  • Another company, Geron, received F.D.A. approval for a clinical trial to test human embryonic stem cells to treat spinal cord injury.

Reflection

I don’t really know much about stem cell research. This article gave me a sense of what was going on. This story implies that stem cell research is becoming more accepted by people in our country. I don’t have an opinion about stem cell research yet, but I think that once I learn more about it, I’ll be able to share my views about it. I think that the people who want the proposal mentioned in the article to be passed will profit from it if it ends up being passed. The trial for this case should be an interesting one because there are different viewpoints involved in this issue, both moral and economical. This article was kind of boring for me to read, but it helped me understand the stem cells a little bit better. This course helped me to understand this topic because we studied stem cells and stem cell research.

MLA: Wade, Nicholas. "Agency Proposes U.S.-Paid Research on Stem Cells - NYTimes.com." The New York Times - Breaking News, World News & Multimedia. 19 Feb. 2010. Web. .