Bacteria Can Change Shape to Avoid Antibiotics?!

Can bacteria now consciously make the decision to change its’ shape to avoid being targeted by antibiotics? This article titled “Bacteria caught changing shape to evade antibiotics” seems to think so. However, upon reading this article, I discovered that it’s not that the bacteria makes the conscious decision to change its’ shape in order to avoid being targeted by antibiotics, but rather, the environment that the bacteria is in allows it to shed its’ cell wall. The title of the article is extremely misleading, and can cause undeserved panic because it is implying that bacterial organisms that are damaging to humans have evolved to the point where humans can no longer control them.

TEM of L-form bacteria from Mark Leaver of Newcastle University

If you continue to read the article, you’ll also discover that this certain strain of bacteria can’t evade all antibiotics. It can only make antibiotics that target the cell wall of the bacteria ineffective. There are antibiotics specifically made for targeting cell walls because there aren’t any human cells with cell walls, which makes it easier for the antibiotics to target the right cell. However, bacteria can shed its’ cell wall under non-hostile conditions such as an environment with high sugar concentration. By shedding that wall, the bacteria makes itself harder to detect by the antibiotics and our own immune system. That means that there is one less thing to differentiate the bacteria cell from our own human cell.

With a strong and healthy immune system, the L-form bacteria can eventually be destroyed. It is a little bit more complicated for people with weaker immune systems because they need help from antibiotics, but the antibiotics are ineffective because bacteria will stay in their L-form until the antibiotics leave the system, in which case the cell wall forms again.

Ultimately, there is no need to be worried that bacteria have evolved to consciously change its’ shape to avoid being targeted by our immune system or by antibiotics because it doesn’t. All the bacteria is doing is performing the functions it is programmed to do, like setting up protection against a hostile environment whether it is with a cell wall or without one.

-Sharon Li

 

Deepfake Technology: Can you Tell what’s Real and Fake?

Artificial Intelligence (AI) has improved remarkably since its invention. It has a variety of uses from data analysis, robotics, and applications in the medical field. All these advancements have made impressive societal impacts, however are recent progressions in AI contributing more harm than good to society?

Generative adversarial networks (GAN’s) are a dual AI system which can simply be defined as AI’s which work against each other to improve each other. One AI system considered the generator, develops content and the other AI system determines whether it is fake or not. Every time the secondary AI correctly establishes that a generated piece of content is fake, it provides feedback to the generating AI so that it can improve at producing more believable content. This is an example of machine learning, as the AI systems are continuously bettering themselves from experience without the need to be specifically programmed. This AI technology is considered a neural network as it was created to resemble a human’s neural network, so that the computers will learn like humans.

This leads us to the question as to why GAN’s can be considered harmful? This is because GAN’s are used to create Deepfakes. The term deepfake is used to describe video and audio recordings which have been generated through machine learning. These videos are not real but can be very convincing.

The above video shows a side by side comparison of Robert De Niro and Al Pacino in the film Taxi Driver. In the original film Robert De Niro is the actual actor, however in this video through the use of deepfake technology the actor Al Pacino looks just as authentic as the lead.

                                                     Source https://en.wikipedia.org/wiki/File:Woman_1.jpg#filelinks

Another example of the power of GAN’s is the image above. The picture is a generated image from a GAN and despite how real or familiar this person looks the image is not of a real person. Sites such as “this person doesn’t exist”  are an entertaining way to witness the abilities of these GAN’s, as on this site every time you refresh the page a new generated image of a fake person is displayed.

For purposes like film production, the use of deepfake technology could actually be quite helpful, however it could also be used for much more damaging motives. Technology like this could be used for propaganda in political campaigns. For example videos could be produced of political candidates saying damaging words which would impact their campaign, however these videos could all be fake and a product of deepfake technology. This causes the overall manipulation of information. Additionally this causes a serious impact in the way information is communicated to the public. It also could potentially decrease the public’s trust in true information as it will become harder to decipher what is real from what is fake.

In a study earlier this year researchers had found that although currently it still takes technical skill and a team effort to produce realistic simulations of people’s faces, it is slowly developing to becoming a more automated and accessible technology. If a wider range of people have the ability to use this there are countless ways this technology can be applied; good and bad.

To prepare for this potential increase of deepfakes making its way online, we should be wearier and more critical of videos and information we are presented in the media and online. It is important for us to be aware of the presence of deepfakes so that we can be less susceptible to believing in false information.

 

 

-Shania Mander

Better Sleep Routine Leads to Better Grades in School

Baby sleeping

Source: Google Image

During the midterm season, just as we are in right now, many students in university and high school spend countless nights staying up late to study for their upcoming examinations. Although these students obtain more hours of study giving up their sleep, the test results do not match what they hoped for.

A study done by MIT (Massachusetts Institute of Technology) professors proved that in order to have better academic performance, students need longer sleep duration, better sleep quality and greater sleep consistency.

The study was done by tracking each student’s sleep throughout an entire semester using a device called Fitbits. Since the device uses a combination of the wearer’s movement and heart-rate patterns, Fitbits were used to estimate the duration and quality of sleep. For example, to determine sleep duration, the device measures the time the wearer has not moved, in combination with signature sleep movements, such as rolling over. To determine the quality of sleep, the device measured the wearer’s heart-rate variability which shifts during transitions between different stages of sleep. Fitbits were able to determine the sleep measures, and the professor compared those results to the in-class performance, such as quizzes and midterm examination.

The findings were quite interesting because they found that most of the students who went to sleep before the certain time, which was 1:47am, had higher overall score compared to students who went to sleep after. They also found that students who woke up before the certain time, which was 9:12am, had higher overall score compared to students who went to woke up after.

They found positive correlation between mean sleep duration and overall score, which means there could be relation between longer sleep and better grade. The negative correlation between sleep inconsistency, which was measured by the standard deviation of the student’s daily sleep duration, and overall score, means there is possibility that inconsistency in sleep duration could lead to lower grade. They also found a positive correlation between the wake-up time and overall score as well. Students who woke up before 9:12am  significantly higher score than the students who woke up after.

This research also touched on the academic performance between women and men. In the article focusing on the study, Dr. Grossman, one of the researcher that conducted the study, says sleep could be the reason to why women are doing  academically better in the class compared to men.

In the end, in order for students to do well in school, they need to be able to manage the time well enough so that they can also have a good-night sleep everyday and study for the classes.

-Sara Uzama

A “Fad” Diet That Actually Works

In the past couple of days, I’ve been reading up on fasting with much interest. Being a girl in her 20s, I’m all about the latest diet trends. Ever since high school, I’ve had a poor body image and one of the few diets I tried at the time was intermittent fasting. Obviously, back then I took it to the extreme and would go days without eating. Now, living a healthier lifestyle, I was surprised to learn about the health benefits of fasting, when you don’t take it to the extreme.

Fasting may be the latest diet trend, but it has been a practice within various religions for a long time. It goes back as far as ancient Greeks, who were amazed by the impact it had on the body and mind.

The first experiments on feeding lab animals on alternate days began in the 1940s, says Michelle Harvie, a research dietitian in Manchester, England. Finally, in 1946, the first study on fasting was posted by The Journal of Nutrition. The study demonstrated an increase in life-span and a decreased likelihood of tumour development in rats deprived of food every third day compared to other control animals.

By the 2000s, the idea of fasting was growing in popularity, including a documentary airing on BBC in 2012 and a book followed the next year. In 2003, another study by Mark Mattson found that putting mice on alternate feeding days were healthier than putting mice on a calorie-restricted diet.

There are different methods of practice. On my healthier days, I practiced time-restricted feeding, such as eating for only 8 hours of the day. However, others have pushed to 20:4 or 23:1 regiment. Other approaches include fasting for 2 days of the week.

A study shows that fasting switches up the body’s metabolism. When fasting goes on for more than 12 hours, glycogen levels drop and the body looks to fatty acids for fuel instead of glucose. As a result, the production of ketones is triggered and this is what is thought to be the key factor in the increased in health benefits.

A visual demonstrating the metabolic switch from using glucose to fatty acids

Alison Mackey/Discover

Beta-hydroxybutyrate, better known as BHB is one type of ketone that floods the brain when a person is fasting. A study found that BHB in mice stimulates memory, learning and other processes at the cellular level. BHB also triggers the release of a protein called brain-derived neurotrophic factor (BDNF) which is important for learning, memory and improved mood.

Many believe fasting is just another fad diet. But Harvie believes it might be here to stay because the fasting lifestyle is flexible and people can choose a plan that best fits them. “But at the end of the day, a diet is only as good as the person who follows it,” says Harvie.

– Cindy Liu

EMF Radiation and the Environment

Birds colliding into poles and buildings, beehives going through colony collapse disorder and plants with irregular metabolisms, these problems and more are thought by some to be caused by an increase in human caused EMF radiation.

EMF is short for Electromagnetic Field; electromagnetism is a type of interaction that occurs between electrically charged particles. Everything in the universe is made up of a diverse group of subatomic particles (particles smaller than the atom). One of these particles is the electron, the electron is electrically charged and exists within almost all atoms.  When voltage is applied to a conducting material such as copper the electrons within will gain energy and begin to move in a sort of stream know as electricity. Electricity is extremely efficient in the transfer of energy and information and due to these properties, it is used in almost all aspects of modern life and technology.

Electrons like to have as little energy as possible, so to get rid of extra energy electrons will eject EMF radiation. EMF radiation is made up of subatomic particles called photons, photons can be thought of as packets of energy that travel through space delivering emitted energy from exited particles to particles they collide with. Photons while being a particle can also be thought of as a wave in which frequency corresponds to energy. These different frequencies make up a spectrum in which lower energy photons have lower frequencies and higher energy photons have higher frequency. Many different phenomena are actually effects of photons at different points on the energy spectrum, i.e.: Microwaves, X-rays, Light, Radio, ect.

The electromagnetic spectrum: Showing correspondence between frequency, ionization potential and different EMF radiation classifications. Picture retrieved from: https://www.niehs.nih.gov/health/topics/agents/emf/index.cfm

There are generally two types of EMF radiation ionizing and non-ionizing. Ionizing radiation has enough energy to change the chemical properties of the object affected while non-ionizing is characterized by its lower impact on the objects affected. All electronics used by people today have EMF radiation of the non-ionizing variety because of current safety regulation.

Recent study’s by EKLIPSE have shown that the magnetic orientation of animals and plant metabolism are altered by non-ionizing EMF radiation. The alteration of magnetic orientation within bees can cause them to lose their way and some hypothesis may even be the reason for colony collapse disorder. Magnetic disorientation in birds can cause birds to migrate to the wrong geographically locations and even may affect their ability to balance during fight causing them to crash into things.

A graph of the amount of average EMF radiation measured within UK houses (estimation before 1949) normalised so that the amount of exposure in 1989 is 1. Picture retrieved from: http://www.emfs.info/sources/levels/time/

Since the discovery of electricity, the exposure to EMF radiation in house holds has gone up over ten-fold. This number is only projected to increase and so at this point research into the effects of EMF radtion on the envornment are needed. There may come a day when EMF polution regulations are passed into law.

By Noah Rudlowski

Alkaline Water: Water with Benefits?

Pouring water Source: Flickr

Water contains an abundance of life. It comprises 75% of your body weight and is essential to maintain homeostasis in your body. However, would the addition of alkalinity in your water create a greater benefit for your health? Multiple celebrities, such as Beyoncé and Miranda Kerr, have jumped on the bandwagon, promoting companies that sell alkaline water, however, is it really all it’s hyped up to be?

On a pH scale of 0 being acidic to 14 being alkaline, Alkaline water is found to have a pH above 7, more specifically it has a pH between 8-10, thus making it less acidic than pure drinking water which has a pH of 7. Alkaline water is found to contain alkaline minerals, such as magnesium and calcium, which provides it with its electrolytic properties that allows it to maintain the pH balance and homeostasis in your body that may be altered from diet or exercise.

The pH scale. Source: Flickr

 

Benefits of alkaline water

Companies that promote and sell alkaline water have suggested that drinking alkaline water can help with rehydration during exercise. A study was done on male athletes that tested the effects of consuming alkaline water vs. regular water during combat sports training. When comparing the 2 groups it found that the athletes who ingested alkaline water had a better hydration status, and overall performance.

Another study suggested that the consumption of alkaline water has therapeutic benefits for people suffering from reflux disease, which is a disease that leads to acid reflux causing heartburn and other symptoms. The primary cause of this disease is the damage generated by pepsin 3b, a digestive enzyme produced in the stomach. Upon its activation, it causes esophageal and laryngeal damage which ultimately leads to reflux disease. Researchers found that the pH of alkaline water permanently inactivates this human pepsin 3b through denaturation and as a result decrease its damaging properties.

Some other benefits include flushing out acidic waste and toxins and balancing pH levels in the body.

 

Risks of alkaline water

There haven’t been specific studies conducted by researchers that reflect on the health risks caused by drinking alkaline water. However, companies that sell alkaline water/ionizers such as DYLN suggests not to drink too much alkaline water too quickly. This is due to the potential negative side effects it can cause such as nausea and vomiting. These side effects are symptoms of metabolic alkalosis, which results from the sudden and severe increase of the pH in your body caused by drinking an excess amount of alkaline water.

There is also the risk of simply wasting your money on more expensive water. Watch below to see why:

YouTube Preview Image

 

There haven’t been many studies conducted that can make us certain that there are health benefits or negative side effects of drinking alkaline water long term. So if you plan to make that switch to alkaline water, make sure to follow the suggestions provided by companies in order to maximize its potential benefits and minimize its negative effects.

-Karina To

Would You like Some Plastic with Your Tea?

Image:Flickr

Who doesn’t like coming home at the end of the day and drinking a nice cup of relaxing tea? Well, before you take a sip, you should first take a look at your teabag.

Recently, tea companies have started to switch from paper base teabags to ones made up entirely of plastics, specifically polyethylene terephthalate and nylon. This caught the attention of Laura M. Hernandez and her team over at McGill University, in which they recently published their findings showing that plastic teabags, also known as silken bags, release billions of plastic particles into the tea that is consumed.

Image:Flickr

The team took plastic teabags of different brands and steeped them, one by one, into boiling water at 95℃. When the tea bags were placed into the water they released about 11.6 billion microplastics (100 nm to 5 nm) and 3.1 billion nanoplastics (≤ 100 nm) into a single cup. The amount itself can be alarming, however humans consume an average of 39000 to 52000 microplastic particles annually, and this can increase based on various factors.

The question now stands, does consuming microplastics affect human health? Well, according to the World Health Organization, consuming microplastic has a low health risk in humans, but the amount of microplastics consumed should still be monitored in individuals. For instance, a study found that consuming large amounts of microplastics, over a long period of time, can lead to potential risks of cancer and toxicity in humans. That being said, microplastics effects on human health is an emerging field of study, as many microplastics are now used in everyday materials and products, such as in the food and water industries.

As Hernandez and her team have discovered, the teabags make delicious tea, but the amount of microplastics you are consuming per cup can be a bit concerning. Therefore, more research needs to be conducted on microplastics and its effect on human health.

– Anum Khan.

Making a Difference with Recycling..?

Recycling plastic here in B.C. is straightforward and easy. Simply sort your items into those blue bins and leave them out on weekly collection days. No headache, no hassle and no hidden conspiracy, right?

CBC’s Marketplace found out exactly otherwise. In an investigative report released this past weekend, by placing trackers in bales of plastic commissioned to be recycled, they found that only one out of three waste collection businesses with links to B.C.’s municipal recycling programs ended up recycling the plastic. What did the other two businesses do with their plastic? One dumped it in a landfill. The other brought it to a waste-to-energy facility, where it was incinerated, and what remained was then dumped in a landfill.

What was established instead, was that only 9% of Canadian plastic ended up being recycled. Which begs the question, what happens to the rest? In Canada, 2.8 million tonnes were thrown away as garbage. Ending up in landfills or oceans. On a global scale, 8 million tonnes go into the oceans annually. In the ocean, plastics are then weathered under the influence of solar UV radiation into miniscule fragments called, “microplastics”.

Microplastics are either consumed by marine life or wash up along the shores of beaches. On beaches, they become a habitat in which bacteria can proliferate. With a recent study finding a vast array of bacterial communities thriving on the surfaces of microplastics sampled from beaches and coastal regions in Singapore. Some of the bacteria found were harmful, being linked to the bleaching of corals or infection of open wounds. But some bacteria species identified were able biodegrade plastic, offering a potential solution towards solving the plastic pollution issue.

It should be clear by now that the accumulation of plastic pollution in the oceans is bad. Further compounding this is the ineffectiveness of recycling. So, what does that leave residents of B.C. to do? Reduce and Reuse. The onus once again falls on the individual to be ever more vigilant, and more responsible for minimizing their part in the use of plastic.

– Ryan Chew

Mars: the new Earth?

With the alarming rate of climate change occurring on Earth, will the planet the we call “home” eventually become uninhabitable?

Although it was previously believed that human life could only survive on Earth, a recent study reveals a way to make Mars habitable.

picture of Mars  Source: Pixabay

Instead of trying to make Mars more similar to Earth through atmospheric modifications, Scientists have discovered a new approach to the obstacle of finding a second habitable planet through the usage of silica aerogels.

This material, when placed over regions that are ice-rich on Mars could allow constant visible light to transmit onto the surface for photosynthesis to occur. It could also block ultraviolet radiation and even raise the temperatures underneath to above the melting point of water, without the need for any internal heat source. In addition to these factors, scientists believe that a 2 to 3cm layer thick of silica aerogel get could potentially be equivalent to the Earth’s atmospheric greenhouse effect, thus allowing the beginnings of life proliferation on our neighbouring planet.

Silica aerogel is a solid material with extreme low density, and thermal conductivity. It is an extremely porous material and is currently widely known for its use as an insulator. Currently, aerogels can be found in wetsuits, firefighter suits, skylights, windows, rockets, paints, cosmetics, and even nuclear weapons. However, this new application of the aerogel could shift the focus on the solution to climate change and global warming indefinitely.

The application of the silica aerogel can be tested in hostile environment currently on Earth, such as Antarctica and Chile’s Atacama desert. However, additional factors to the living conditions on Mars such as atmospheric pressure, nutrient availability and dust deposition still need to be considered in this on-going research.

But, through this discovery, perhaps the idea of living on Mars not too far-fetched after all.

Image of Fingers Source: flickr

– Bernice Huynh