Bloodmoon: What the-?! When the-? How the-?!

http://www.telegraph.co.uk/news/science/space/11895472/Supermoon-lunar-eclipse-2015-the-blood-red-eclipse-captured-from-around-the-world.html

The supermoon rises behind Glastonbury Tor (Photo: Matt Cardy / Getty, taken from The Telegraph)

Did you see the bloody moon last Sunday, September 27? If not, then too bad because the next time you see it will be in 18 years!

You may be wondering what exactly this “bloody moon” is and why it is such rare occurrence. Let me get down to the basics.

First of all, a lunar eclipse occurs when the Earth blocks the sunlight reflecting off of the moon’s surface, creating a shadow against the moon and darkening it. There are three types of lunar eclipses (penumbral, partial and total) but for now, we are interested only in a total lunar eclipse when the moon “bleeds” against the dark sky. In actuality, the full moon gets covered completely by the Earth’s shadow, when the moon, Earth and Sun are in perfect alignment. It turns a reddish hue from some light refracted off of Earth’s atmosphere towards the moon.

Image taken from Wikipedia, labeled for non-commercial reuse.

Even though we have a full moon every month, total lunar eclipses only happen once every 6 months or so. A 5-degree angled orbit of the moon around the Earth makes the occurrence less likely to happen.

On the other hand, a supermoon can be seen when a full moon is at its perigee, or in other words, at the closest point in the moon’s orbit relative to Earth. At this perigee, the moon appears brighter and bigger by 12-14% than a moon at the apogee, a very noticeable change.

Moon size and position at perigee and apogee. (Image taken from skynews.ca)

According to EarthySky.org, the next supermoon will happen in November, 2016 then January, 2018, so roughly every 13 months.

The effect of a total lunar eclipse occurring at the Earth’s perigee is an abnormally large, very photogenic, “super bloodmoon”. The rarity of this cosmic happenstance is roughly once every 18 years. The closest, biggest and reddest supermoon since 1982 occurred in September 27/28 2015. It is visible to North and South America, Europe, Africa, and parts of Asia- in short, we can see it from Canada. Luckily for me, I stepped out of my house that evening to witness the eclipse as it was occurring at around 10 PM PST. No sunglasses needed, and no telescopes either. Just a blanket, a folding chair and some mosquito repellent then I was good to go! For all of you who missed it though and would like to re-watch it, a recording from Griffith Observatory, CA is included here.

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“Asian Glow”: More than Embarrassment

Have you ever gone out to the bar or had a couple of drinks with friends of East Asian heritage (Chinese, Japanese, and Korean)? If so, you would have probably noticed that at least one of their faces turned red after only a few sips of alcohol. This is called the “Asian Glow”. As the name suggests, it refers to the common reaction of Asians turning red after drinking alcohol.

Asian Glow: Before and After | Image: Brooks PJ, Enoch M-A, Goldman D, Li T-K, Yokoyama A

According to U.S. Department of Health & Human Services, our body breaks down alcohol in two steps, facilitated by two enzymes that speed up the break down process. The enzyme alcohol dehydrogenase (ADH) converts alcohol into a toxic intermediate called acetaldehyde (C2H4O), then the second enzyme aldehyde dehydrogenase (ALDH2) turns it into acetate (CH3CO-2) and releases the toxic compound out of the body.

Breakdown of Alcohol in Two Steps | Credits: ethanol, acetaldehyde, acetate molecules from Wikimedia | Edit: Even Zheng

Unfortunately, about 80% of all East Asians are born with overactive ADH in their stomach and liver, breaking down alcohol up to 100 times faster into the toxic acetaldehyde. In addition, about 50% of East Asian have a deficiency in ALDH2 enzymes, which means it takes much longer for the body to clean out the residues of alcohol. Simply put, their body skips right past the pleasant effect of alcohol and experiences body rash, nausea, dizziness, and all the “hangover symptoms” much faster. Now we know who to blame, it’s all because of genes!

I remember a time I was at my friend’s place for a small gathering. It was only half an hour into the chitchat when my friend pointed at me and said, “Your face looks like a stop sign!” followed by everyone’s laughter. At that time, I literally had half a can of beer. If anybody can relate, someone has probably also told you to practice and increase your tolerance level, but you might want to give that a second thought.

What most people don’t know is that the toxic acetaldehyde is actually a cancer-causing agent. An article published by The New York Times revealed that researchers believe the condition of turning red after drinking alcohol may link to increased risk of throat, stomach, and esophagus cancer, which are some of the most deadly types of cancer. This is especially dangerous for people who have developed a high tolerance to acetaldehyde and became heavy drinkers.

A Time Magazine article suggested that the hereditary trait may have evolved in the ancient Chinese population as a survival strategy to allow people to drink alcohol made from fermented rice, while protecting them against alcoholism. Regardless of its credibility, there is indeed a lower rate of alcoholism among people with the deficiency, for obvious reasons. Before we find any way to replace the inactive enzyme or develop safe medications, it is the best to just avoid drinking altogether. It might make your parties a little “lame” on Friday nights, but on the bright side, you now have a good excuse to tell your friends when they want to go out for a drink right before your exam.

Here is a video to help you understand the metabolism of alcohol: YouTube Preview Image

Credit: Science of Nutrition

-Even Zheng

ALS, Still Incurable?

About this time last year, you may have seen millions of videos on social media: people were pouring buckets of ice water over them, nominating others to either take the challenge itself or financially to help fight ALS. Until I saw one of those videos, I, personally, didn’t have any clue what they were doing. Yet, I had no scientific knowledge about ALS.

Normal nerve cell (left) and damaged ALS nerve cell (right) (Source: Mahesh Kumar - via Flickr - https://www.flickr.com/photos/maheshmedindia/7182628151/in/photolist-bWGR7p-8x8Vhw-mrehCZ-mrg65y-mreikk-b8j56g-bSpVqD-oXmggM-bu1MUH-JkXVq-dSh244-paFp4a-sbRLs-9ycT8J-s71EA-9jCphF-6ixrC8-jnEixn-nEAfpf-pGGChv-jnEiDK-bxmLCd-bxmLDj-bLgssZ-bxmLAu-bxmLBd-5vaBWM-5AqpP1-pqic1f-6d5Ebb-6d5Cfh-8TBvE4-8TBvVD-8DJYEE-8DJYDG-8DFSjD-5AqpJw-6d5Kch-8TF1qb-91VyCH-8TF2L3-8TBX4v-8TBY46-8TF5xW-3pJCp3-3pE4Pz-91YFdu-8TBZVF-8TF7Mo-6d5Bom

Normal nerve cell (left) and damaged ALS nerve cell (right) (Source: Mahesh Kumar – via Flickr)

ALS (Amyotrophic lateral sclerosis), often called as Lou Gehrig’s disease, is a progressive neurodegenerative disease which causes motor nerve cells in the brain and spinal cord to degenerate. Eventually, the brain becomes impossible to initiate and control muscle movement. Patients in the beginning stage may experience difficulties with breathing, swallowing, and speaking. Later in the stage, patients become completely paralyzed. Stephen Hawking, one of the most recognizable scientists, was diagnosed with slow-progressing form of ALS in his early age. Most people who develop ALS are in between the age 40 and 70, but there are cases occurring in twenties and thirties. For more information of how it is like living with ALS, check the video below:

Credit: Roundabout U

According to an article from Johns Hopkins Medicine, ALS affects nearly 30,000 people in the United States. Every year about 5,000 people are diagnosed with ALS. Through the Ice Bucket Challenge, one of the most powerful examples of social media movement, the number of people, politicians, celebrities, and CEOs participated in this challenge, luring attention to the society. There was one of the key important message embedded in the ice bucket challenge. The idea of challenging people to douse themselves in cold water help them indirectly experience muscle contraction, just like how the ALS patients are going through.

Ice bucket (Source: Mauviel M30 Ice bucket - license available under the Creative Commons Attribution 2.0 Generic license via Commons - https://commons.wikimedia.org/wiki/File:Mauviel_M30_Ice_Bucket.jpg?uselang=en-ca )

Ice bucket (Source: Mauviel M30 Ice bucket via – Wikipedia Commons)

According to the article from Time magazine, ALS Association (ALSA), has received over $115 million in donations. ALSA allocated towards a number of research, community services and patients to improve the quality of lives. So far, it has spent about $47 million. Two-thirds of them were spent toward various researches of gene discovery, drugs and disease model development, and identification of biomarkers. 20% of the donations have been spent on patients and community services, and 11% on fundraising and education. According to ALSA, 79% of their budget was spent toward services and programs, and 28% of that was on research.

Recently, researchers have found a protein, TDP-43.  This is what ALS patients fail to have in their cells and if they repair this protein, the damaged cells in ALS can restore. Researchers are hoping to see if this method can be applied to many diseases that weaken muscles, such as  Alzheimer’s and Parkinson’s diseases. Without those funds, it would have been difficult to demonstrate this high-risk-high-return experiment. Through social media, ALSA has been able to draw the attention to this “incurable” disease for further research and education. Hopefully soon in the future, TDP-43 becomes a key to many neuromuscular disorders and therefore cure many patients.

 

Posted By: Josephina (KyungBin) Kim

Should I invite “coffee” and “Red Bull” to my late night study sessions?

We all know the feeling. After working into the night on a term paper, sipping coffee and dazing into the backlight of your laptop screen, your head finally makes its way to the pillow. You lie in your pitch dark room but you just cannot fall asleep. Why? You did have that coffee a mere three hours ago which is the cause of your wakefulness but could that really delay your entire circadian rhythm?

Your circadian rhythm is a natural body cycle that runs over a 24 hour period to match up with the hours in a day. Generally, this cycle controls your wakefulness and sleepiness by regulating the hormone melatonin. For more information about your circadian rhythm, please check out the video below:

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Credit: SciShow

Just a few days ago, the Journal of Science Translational Medicine published an article that stated what happens inside and outside of you when you consume caffeine just before bed. After approximately 49 days, scientists at the University of Colorado in the Sleep and Chronobiology Laboratory discovered that individuals who consumed the equivalent of one double espresso three hours before bed caused a delay of approximately 40 minutes in their circadian rhythm. They found that the hormone melatonin which is normally at a high level before bed, was abnormally low in these individuals. Additionally, they assessed the effect of bright light exposure on the individuals and similar disruptions in the circadian rhythm were documented. In fact, it was found that bright light exposure had about twice the negative impact on the circadian rhythm than caffeine, delaying it by over an hour. 

According to Science Daily, caffeine is a psychoactive drug and we now know that it alters the natural circadian rhythm. Below is a list of common beverages and the amount of caffeine in each. It makes me wonder why so many individuals consume these beverages on a regular basis and why are there no regulations in place to monitor consumption?

Caffeine drinks graph

Credit: https://smithlhhsb122.wikispaces.com/Gabriel+S.

I think that if our generation started consuming caffeinated beverages as early as high school, the disruption in the circadian rhythm cycle could accumulate and cause long term issues such as chronic sleep deprivation, insomnia and other sleep maladies. This could cost millions of dollars in pharmaceutical drugs and other treatments to fix so it is important for us to take a stand now for our own well-being.

In conclusion, I believe that next time you are up late to study, it is best to choose beverages without caffeine. I think that the emerging research about caffeine consumption is incredibly important since caffeine is consumed on such a frequent basis. I would like to see some further research advising individuals of the best time of day to consume caffeine in order to minimize the impact on the circadian rhythm.

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Credit: geobeats

Rosalyn Desa

Birth Control and Grapefruit Don’t Mix

Ladies, we all remember the moment when the doctor is naming all the horrible side effects caused when starting new birth control pills: nausea, headaches, risks of blood clots, risks of breast cancer and many more.

L0059976 Model of a contraceptive pill, Europe, c. 1970 Credit: Science Museum, London. Wellcome Images images@wellcome.ac.uk http://wellcomeimages.org Birth control was still a taboo subject before the 1960s. ‘The pill’ seemed an ideal contraceptive because it was effective, not messy, and did not interfere with sex. The oral contraceptive pill also empowered women to take greater control of contraception. However, the first pills had a far higher level of hormones than required. This caused heart problems in some women. Later pills rectified this. ‘The pill’ is still prescribed worldwide. maker: Unknown maker Place made: Europe made: 1965-1975 Published: - Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/

L0059976 Model of a contraceptive pill, Europe, c. 1970
Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/

Although what most people do not know and what most doctors fail to mention is the effect that a simple fruit such as grapefruit can have on the metabolism of birth control pills.

By Citrus_paradisi_(Grapefruit,_pink).jpg: א (Aleph) derivative work: — raeky (Citrus_paradisi_(Grapefruit,_pink).jpg) [CC BY-SA 2.5 (http://creativecommons.org/licenses/by-sa/2.5)], via Wikimedia Commons

To see how such a fruit affects the way a female body digests the birth control pills we have to look at the constitution of these pills. Birth control pills are made of hormones that cause changes in the female reproductive system to make it incompatible with gestationEstradiol is a form of the sex-related hormone “estrogen” that controls Vaginal, Fallopian tube and Uterus growth. It is a main component of the birth control pills.  During the process of pill digestion, most of the pill is absorbed in the intestine with the help of CYP3A4 enzyme that has the ability to break down drugs and dispose them from the body.

Häggström, Mikael. “Medical gallery of Mikael Häggström 2014”. Wikiversity Journal of Medicine 1 (2). DOI:10.15347/wjm/2014.008. ISSN 20018762. (Own work) [Public domain], via Wikimedia Commons

Unfortunately, drinking grapefruit juice or eating grapefruit affects the enzyme’s activity directly by inhibiting its digestive function. The inability of the pill to be absorbed by the body, leads to a high percentage of the contraceptive’s main ingredient, estradiol, to be left in the bloodstream. Such a hormone can be very risky if found in high amounts in the bloodstream.

The most common side effects that will be felt are dizziness, nausea and breast tenderness. Meanwhile, long term exposure to this factor can be a main cause for blood clots and breast cancer.

Even though there are existing speculations that predict grapefruit  has the ability to completely reverse the function of birth control pills by exposing women to the risk of pregnancy, there is no current evidence to support these claims.

Take a look at this video that gives general information on the side effects of having grapefruit while being on different types of medication:

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Author: ABC News

So next time you’re using birth control pills to practice safe sex, please stay away from the “forbidden” fruit that literally has the ability to ruin your life.

Posted by: Doris Stratoberdha

 

SCIE 300 Course Blog Section 111

Welcome to the SCIE 300 course blog!

Here are few things to make note of before you get started with your posts. First of all, you should read the blogging resources page under the Create menu. This will help you out a lot if you are brand new to using WordPress. On this page you will find video tutorials about writing posts on this blog, adding media to your posts, tagging, and categorizing. You will also find a link to the rubric we’ll use to grade your blog posts.

Next, check out the blogging guidelines. Here you will find the answer to the question: “What are we supposed to blog about?” You can also check out one of last term’s blogs for some additional inspiration.

There are a few important things to keep in mind when blogging. Please do not assume that just because something is online, it is OK for you to use it. For example, unless it is explicitly stated, an image on the internet can not just be copied, saved, and used in your own post without permission to do so. We’ve provided you with a lot more detail about properly using online content, but if you have questions, let us know.

This blog also contains a lot of resources for you. For example, still under the Create menu, there is a  list of suggested software to use for your projects. We’ve also collected some writing and presentation resources.  Basic audio/visual equipment can be borrowed from SCIE300. Contact the course coordinator for more info.

Under the Explore menu, you will find some sample podcasts and videos, links that may be of interest or assistance, a list of groups and associations related to communicating science as well as a list of local museums and science centres. The Explore menu also contains a library resources page, which you should definitely have a look at. Finally, there is a bookshelf that lists relevant books that are on reserve for you in Woodward Library.

Let us know if you have any questions about the blog or would like to see any other resources made available. Or, if you find something that you think would be useful to the rest of the class, tell us, and we can add it to the resources. Better yet — write a post about it!

Happy blogging!

The Science 300 Team