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Hand Dryers or Paper Towels?

     Have you ever ventured into the bathroom and wondered, which was more clean – the fast and convenient “eco-friendly” automated hand dryer .. or the old fashioned paper towel dispenser? This question has recently been turning in my head whenever I get out of the stalls. Is there a difference to which appliance reduces the most amount of bacteria on my hands? By how much? I decided to take the plunge and figure this mystery out. The results that came back were absolutely shocking to me! 

     
     Whilst searching for my answer, I found out that Mythbusters actually did a segment on this phenomenon with an experiment of their own. 

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“First, to find out if washing hands even leaves behind any bacteria to be removed by hand dryers, Adam and Jamie tested three different, commonly used methods of “washing” hands, each followed by swabbing and incubating in Petri dishes. Their methods included rubbing their hands together without placing them under the water, getting their hands wet but neglecting to use any soap, and washing their hands with soap and water (the proper method). They discovered that washing their hands with soap and water yielded no bacteria whatsoever, whereas washing without soap left a fairly substantial amount of bacteria and attempting to wash without water left far too much to count.

     Next, they enlisted 16 volunteers to have their hands sprayed with a harmless strain of Escherichia coli bacteria, then swabbed for a sample, had the volunteers wash using water but no soap, swabbed again, dried using paper towels, and finally swabbed a third time. Jamie and Adam then repeated the process with the same volunteers, bacteria and washing technique, but used hand dryers instead. On average, the paper towels removed 71% of the bacteria on the volunteers’ hands, while the hand dryers only removed 23%, confirming the first part of the myth.” (summary of episode can be found here)

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     Samples taken from swabbing the testing areas yielded 3 strains of bacteria for the paper towel area and 41 strains of bacteria remnants for the hand dryers, confirming the second part of their myth that indeed… hand dryers are filled with more bacteria simply because the person’s bacteria in front of you is essentially being blown off their hands and spread all around the surface of the dryer itself.

     Aside from the fact that the automated hand dryer does reduces the amount of paper consumed from your hands…. it does NOT mean that it is actually doing the job of properly cleaning your hands.
     This information has left me in a tangle because I realize that there are two conflicting factors. Cleanliness vs. Environmentally Friendliness. I’ve weighed the benefits and potential environmental costs… now it’s your turn to decide given this information! 

Happy Drying!



Déjà Vu: All Too Familiar of A Feeling

Imagine standing in a foreign country you’ve never traveled to before. You’re sightseeing and suddenly start to feel like you’ve seen that particular monument or famous building before. It seems like it’s this super natural force that can’t be real life. What is this indescribable feeling? D�j� vu. We’ve all heard of it and chances are most, if not all of us have experienced it. It’s literal translation is “already seen.” Whether it be for 1 second or for as long as 30 seconds, the feeling of experiencing something for a second time that you’ve never actually experienced before is definitely an alarming and unexplainable feeling. When you really think about this, it truly seems impossible. So what causes this crazy sensation? According to this website, that was provided by Penn State itself, d�j� vu is something that still hasn’t really been explained by science. Throughout the years, different scientists have had different theories as to the reason behind this phenomenon. Repressed desires and collective unconscious have been ideas, but as the science world became more educated on how the brain worked, the less likely these theories were. There was even thought that it was caused by one part of the brain visually seeing something and then the other side of the brain got that delayed information and stored it as a memory. 

If you ask me, d�j� vu is something that could never be explained or scientifically proven as to why people experience this. For all we know, we could be experiencing it because we saw something like that in a past life. Or maybe we have a parallel universe and our life in another universe is crossing paths with our life in this universe. Now I’m just sounding crazy, but d�j� vu is a crazy thing that will forever leave me perplexed. To read more about how the brain works and the different areas of the brain click on the link above or go to this site for an even more in depth look at how the brain works. Maybe you think of a better reason than mine as to why d�j� vu happens. 
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Can’t Focus? Here’s A Cute Puppy

I don’t think there’s anyone who loves cute animals more than my roommate. Every time I get home, she’s always “aww”-ing at something fluffy on her computer screen. While part of me is tempted to ask her how she somehow never has work to do, something always stops me. I remembered hearing before that looking at cute animals can help increase productivity, but how could that be?

According to an article in the Huffington Post, Hiroshima University conducted a study about “cute animals” led by Japanese researcher Hiroshi Nittono. For the experiment, Nittono studied 48 students as they completed a task similar to playing the game “Operation.” The students were asked to attempt the task 3 times: “the first after looking at a series of pictures of baby animals, then after seeing adult animals and finally after seeing pictures of delicious foods.” The results showed that participants performed the task more carefully after seeing the cute baby animal images. “This is interpreted as the result of a narrowed attentional focus induced by the cuteness-triggered positive emotion that is associated with approach motivation and the tendency toward systematic processing.”

But this seemed to good to be true; I can take a study break by looking at cute animals AND it will actually be beneficial? I had to see some serious scientific evidence…

According to the Washington Post, adults tend to slow down speech when talking to puppies and kittens, and these behaviors “may transfer to subsequent task performance.” I found myself being able to relate to this hypothesis considering the way I talk to my dog at home… But not all people talk to puppies and kittens, and I’m sure not everyone talks to them slowly. Could there be another reason behind the findings of the study?

Luckily in the world of science, there’s always room for another potential answer. “Caring for babies (nurturance) not only involves tender treatments but also requires careful attention to the targets’ physical and mental states as well as vigilance against possible threats to the targets. If viewing cute things makes the viewer more attentive, the performance of a non-motor perceptual task would also be improved,” the study stated. To me, this reasoning seemed much more legitimate because it was based on the natural, compassionate way that humans tend to care for babies, which I think we all can agree holds true.

I never thought I’d see the day, but there you have it: puppies are scientifically proven to help you focus. As college students, we’ve all had those moments where we just can’t bring ourselves to be productive. So next time you’re ready to throw in the towel for the night, follow @CuteEmergency on Twitter! But in the mean time, enjoy these puppies J

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Chance and Your IQ

Do you ever contemplate the idea that one miniscule event in your life could have changed you forever? Imagine that you’d been just 30 seconds earlier to class that day and sat in a different seat; you could have missed out on sitting next to the person who may one day be your best friend. Perhaps you missed a song on the radio, and you may not have ever heard of what is now your favorite band. The opportunities that we take, as well as those we skip over, have the chance to mold and shape who we are and where our lives take us. Some facets could be due to pure chance, or our background may affect some aspects of who we become. Continuing with the idea discussed in class as to whether or not worms can impact intelligence, I decided to look into what else can have an effect on a person’s academic success.

             There are a few obvious factors that play into a person’s measured intelligence, such as their upbringing, environment, and role models. It’s very easy to see how these could have a huge influence on an individual’s academic success. A healthy upbringing in a happy and well-off home will allow a child to focus more on their studies, and positive role models give children something to aspire towards which usually gives them a more powerful drive to do well in school.  According to The Discovery Channel, there are five main factors that influence a person’s intelligence. The first is genetics, which they refer to as “nurture.” Studies show that genetics can influence anywhere from 40% to 80% of a person’s intelligence. It is also connected to the brain structure, as brain pathways with “better” development allow for better IQ scores. The next reason they list is early nutrition. They state that the nutrients received from a mother’s diet before a child is born, as well as the nutrients they receive within the first few years of life, can enhance brain structure, as well as enlarge the caudate. The caudate is a region in the brain that involves the way we learn as well as our memory. As previously mentioned, they also list “nurture” as a factor, which is essentially the environment in which a child grows up. Another factor listed is what is referred to as “birth order,” meaning that there was once an understanding that the oldest child would be more intelligent than any child born after. While this is neither proven nor disproven, it is often accepted to be true. The final factor they list is environment, which they essentially describe to be the same thing as “nurture.” They did not form a clear line between “nurture” and the “environment” or how they may each have a different impact on a child (“Curiosity”).

The question that now remains is: what other factors play into a person’s intelligence?  Also, what steps could parents take before a child is born to improve their IQ? Nutrition was mentioned, but what specific nutrients benefit the brain and its development in particular?

And, as for experimenting to test these theories, wouldn’t be unethical to purposefully deprive an unborn baby or a toddler of the proper nutrients it needs? How did they create a control group?These are just a few of the many questions left unanswered by The Discovery Channel’s research.

The fact that something like genetics or prenatal nutrition, both of which are so far out of our control, could influence our intelligence and consequently our whole life is a scary concept. Life truly is a game of chance and coincidence.

  

“Curiosity.” Discovery Channel. N.p., n.d. Web. 09 Sept. 2013. <http://dsc.discovery.com/tv-shows/curiosity/topics/5-factors-that-affect-human-intelligence.htm>

Jared Is No Better Than the Gold Arches

When I’m traveling I always have to make the tough decision to eat fast food or not, and I always face the constant battle between Subway or McDonald’s, two of the biggest fast food companies. Trying to maintain my health I usually pick Subway for a nice whole-wheat sub, but contrary to popular belief Subway can be unhealthier than McDonald’s.

At first people are found to be in disbelief when they hear that a sandwich shop can be so unhealthy, even with smart choices.  Researchers at Palo Alto Medical Foundation conducted an experiment with 97 children ages 12 to 21 to purchase meals at a McDonald’s and a Subway.  A major error with this experiment that there was no control group to see what a normal teenager would eat. Additionally, there is no clarification on the amount of each gender that took part in the scientific research.
jared_subway_barf.jpgRegardless of the errors, the experiment discovered that the average person in the experiment ate 1030 calories at McDonald’s and 955 calories at Subway, which is not a significant difference.  The article on Take Part states that students should not consume more than 850 calories in a school lunch. By definition, both fast food chains are unhealthy.  The hard hitting evidence is the sodium that is in each product that both companies sell.
Shockingly, Subway sandwiches have 2,149 mg of sodium, while McDonald’s has approximately 1,829 mg of sodium.  In other words, Subway has more sodium in their food in comparison to the famous gold arched fast food joint called McDonald’s.  People are caught up that Subway is healthier, thus they do not make smart decisions when at the restaurant because they believe they are already making a healthy decision. 
At the end of the day fast food will always be fast food.  There will always be a lot of sodium in the food, and a lot of fat.  To eat healthy, one must avoid fast food restaurants, so next time your traveling be sure to pack enough food.  What is your fast food place? Do you attempt to make healthy decisions when there?  Subway or McDonald’s?
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Do you get enough H2O?

Everyone has heard the old saying “make sure you drink eight 8-oz glasses of water a day!” before in their life, but how many of us actually use that advice? While no one can live without water, it’s important to remember the vital functions that water can provide us with.  

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In high school, I cut back on drinking pop and other sugary drinks, because I set out to make it a habit to drink more water and to overall try to be healthier with what I was consuming.  That’s when I decided to invest in a CamelBak water bottle, something I’ve seen people drinking out of.  The concept of the bottle is different than most, with a squeeze and non-spill nozzle, instead of having a cap.  Every day in school, I would fill my water bottle up about four or five times a day, and I started to wonder if because of the design of the CamelBak that I was consuming more water in a day.  A study by Pepperdine University found that people who use CamelBaks are likely to consume 24% more water in a day than any other water bottle, reusable or disposable.  
I’ve gone through two CamelBaks since I originally purchased one, and it’s one of the best decisions I’ve ever made- for my own enjoyment and to overall better my health! I would highly suggest you invest in one of these nifty water bottles, because how much water do you truly drink in a day?
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What exactly is an allergy?

For my whole life, I have had allergies to something.  Sneezing, coughing, hives, swollen lips, vomiting; you name it, I have had that type of reaction to something.  Whether it was a pollen allergy or for allergy, I have experienced it all! Surprisingly I do not have a gluten or peanut butter allergy (well, as of right now I don’t) but I am allergic to many other things.  My list includes: kiwis, peaches, cherries, guinea pigs, rabbits, hamsters, pertussis vaccines and z packs (many people take z-pack when they have bronchitis in order to break up the mucus in their lungs that makes their chest feel heavy).  Even though I have had allergies for most of my life, I never really understood what exactly was happening in my body to give me allergies to certain foods.  According to Medical News Today , when someone has an allergy to something, it means they have a hypersensitive immune system that responds to certain things as if they are toxic pathogens entering the body and your body is trying to get rid of the pathogen.  Something interesting that I read was that usually people do not have allergic reactions immediately.  It could take someone a while to build up an allergy to something. For me, it took twelve years for my body to decide that it wasn’t going to let me eat peaches.  This process is known as sensitization.  This is when the body’s process of building up antibodies to fight the pathogen.

So what exactly does it mean to build up antibodies to something? When reading WebMD , I learned that your body starts to produce something known as IgE which will bind the antibody.  Then these antibodies will come together to form a mast cell(these mast cells are usually found in the body’s airways, and GU tract which gives them a better chance at being exposed to the allergen).  The allergens will then attach to the mast cell and then the mast cell will release histamine into the bloodstream which causes the allergic reaction.  This probably explains why I have slowly developed more allergies during my lifetime.  According to an article that I was reading on the Mayo Clinic website, food allergies in children have developed so rapidly and have become so bad that the FDA requires all food manufacturers to put the eight most common allergy foods on their labels.  These foods include: milk, eggs,tree nuts. peanuts, fish, shellfish, soy and wheat.  All of this talk of food allergies reminds me of the scene in the movie, Hitch, when Will Smith has a bad reaction to a food that I could consider being classified as Anaphylaxis, a life threatening reaction.  Of course the movie makes the exaction extremely comical.  So for those of you who have not seen it, check out the movie clip to watch the allergic reaction scene!
photo credit to this site 
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What Makes Popcorn Pop?

 Whether it was going to the movie theater to see a new movie, grabbing a box of Cracker Jack, or eating my personal favorite Fischer’s Popcorn on the Ocean City boardwalk popcorn has always been my favorite snack. But have you ever thought of what actually makes that tasty treat in your hands pop? Most people think it’s just the heat given off by whatever type of machine is making the popcorn but there is more science in how it’s made.

Coming from the Kingdom Plantae its scientific name is zea mays everta. Popcorn is one of the many grains humans consume. Popcorn has also been found in some of the oldest and oddest places in the world including tombs off the coast of Peru (1,000 years old), and bat caves of West Central New Mexico (5,600 years old). In Mexico City popcorn kernels were found that date back to over 80,000 years old in which could still be popped to this day. So we must ask what makes popcorn kernels so well preserved?

According to a study done by NASA, the secret to the popping of popcorn and its preservation isn’t all from the heat around each kernel when put on a stove, campfire, in a microwave, or popcorn maker. It’s overlooked in that each individual kernel itself contains a small amount of water and oil stored within a circle of soft starch inside the harder outer casing, called the popcorn hull. When this small amount of water reaches the temperature of 450 degrees Fahrenheit the moisture turns into steam causing around 930kPA (135psi) of pressure to build within the small circle of starch. This essentially causes the expanding proteins and starch within the kernel to explode like a tiny bomb turning the kernel into a foam as the kernel turns completely inside out and cools into the famous popcorn puff. Watch a high speed video of a Kernel popping at 5,400 fps.

So the next time you’re watching that bag of popcorn spinning around in the microwave counting down the seconds until you get to enjoy that delicious buttery goodness remember there’s science taking place as the little combustion taking place inside each individual kernel happens.

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Microwave Popcorn More Efficiently  

 

 

Aurora Borealis

Many of us have seen the Aurora Borealis, also known as the northern lights in movies. Some of us have been lucky enough to travel close enough to the north pole to see them in person (or to the south pole to see the aurora australis, southern lights).

So, what causes these beautiful lights to occur in nature? I personally have not been able to travel to see the northern lights; movies are the extent of my experience with them. The fact that such extravagant light shows can be created in nature amazes me, so I did some research.

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It turns out that the northern/southern lights only occur in the magnetic fields around the poles. Solar winds arriving at earth (about 40 hours after leaving the sun) follow the lines of the magnetic fields around the poles (which are generated by the earth’s core). Electrons in the solar wind then collide with atoms of either oxygen or nitrogen at various altitudes and create the colors that we see. 
Blue– nitrogen, altitudes up to 60 miles
Red– oxygen, altitudes above 150 miles
Purple– nitrogen, altitudes above 60 miles
Green– oxygen, altitudes up to 150 miles
*Aurora is what the light is called after the collision of the electron and the nitrogen/oxygen atom

All of the different auroras interact with each other, and that is why they sometimes appear as ‘dancing’. The lights are best seen from November to March, and the best places to go to in order to see the northern lights are around the magnetic field. Here’s a list of the top 4 places to view the Aurora Borealis (click links for pictures!). Unfortunately, the only place the aurora australis can be seen is from Antarctica, which is not easily accessible. You can catch glimpses of the southern lights from the bottom of Australia, tip of South America, and South Africa.

1. Troms�, Norway

2.Yellowknife, Canada

3. Fairbanks, Alaska

4. Kangerlussuaq, Greenland

After researching how the northern (and southern) lights are created, I can’t wait to travel to a one of these places and see them in person! 

Sources:

Do crows have their own language?

I don’t know about you, but personally, crows have always freaked me out. As a symbol of death, I hate the foreboding vibe I get from them. 

I remember awhile ago, my older sister told me crows had their own language, and I had to investigate further. And in fact, crows do have their own language, as well as a couple of other creepy, yet fascinating qualities.
So all that cawing you hear in the morning? That isn’t just noise. Apparently, they conspire with one another. Scientist aren’t sure if they can call it an official “language,” but the crows are communicating with one another in an “advanced fashion,” according to David Dietle from Cracked.com. Crows are even thought to have regional dialects as well, according to National Geographic. Now that’s insane!
Dietle also suggests in his article that crows have the ability to memorize your face, play tricks on one another and plan attacks or events. Dietle discusses an experiment done on a college campus where certain students wore masks while tagging seven crows. Later, those students walked around campus wearing the same masks, and the crows that had been tagged started dive-bombing and attacking only the people with the masks. Even some crows that had not been tagged began joining in on the attacks as well. 
Let’s hope you were nice to the crows that invaded Penn State last year…they know who you are. 
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