NASA Confirms Flowing Water On Mars: Unlocking the Mysteries of the Red Planet

The fourth celestial body from the Sun and one of Earth’s closest neighbors has just got a little brighter in the public eye. Scientists at NASA have made a ground-breaking announcement regarding one of the oldest questions surrounding Mars. The discovery of extraterrestrial life? Sorry, no. But something just as exciting. In a press release on Monday, NASA confirmed that it has found evidence of water flowing on present-day Mars.

Author: NikoLang Courtesy of Wikimedia Commons

Description: Mars Dayside in Celestia with Addon
Author: NikoLang
Courtesy of Wikimedia Commons

Data from NASA’s Mars Reconnaissance Orbiter, or MRO, showed seasonal changes in the level of hydrated minerals on the surface of the Red Planet. Spectral imaging analysis of certain Martian slopes indicated a cycle of liquid water flowing downhill during warmer seasons. This flow would then recede in colder seasons, not unlike on our own planet. This pattern was found in several locations on the Martian surface which were once considered mysterious due to unexplained observable streaks. For a science geek like myself, it feels like the start of a brand new chapter in space education. And I’m sure publishers are salivating at the chance to revise hundreds of thousands of science textbooks.

Courtesy of NASA via YouTube

In addition, the discovery has major implications if whether Mars is able to currently support life and if humans will one day be able to utilize this precious resource. John Grunsfeld, astronaut and associate administrator of NASA’s Science Mission Directorate, described it as a meaningful step in mankind’s exploration of space.

“Our quest on Mars has been to ‘follow the water,’ in our search for life in the universe, and now we have convincing science that validates what we’ve long suspected.”

Furthermore, NASA’s latest revelation is an excellent example in how the agency is reaching out to the general public. NASA scientists opened a digital dialogue via Reddit.com, answering Mars-related questions from online users. In my opinion, this form of two-way communication allows NASA to send a much clearer message to the general public without news producers filtering it within the web of mass media. It also gives that message a more personal touch, which may be more interesting and inspiring to a younger generation that did not grow up watching the shuttle missions.

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NASA Subreddit Logo
Courtesy of Reddit.com

YouTube and social media were also utilized to spread the news. Such efforts are important as NASA’s funding has reached record-low levels in recent years, in terms of proportion of spending of the U.S. federal budget. This drop in relative funding has now forced the world’s space program to solely rely on Russia to transport astronauts to the International Space Station. However, the decline of NASA’s influence may have a silver lining as private companies have cropped up to fill the void and perhaps one day step up to take the lead in this field. Virgin Galactic and SpaceX are just some of the more prominent firms that come to mind.

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NASA Budget as a Percentage of U.S. Federal Budget
Author: 0x0077BE
Courtesy of Wikimedia Commons

The announcement also comes at an opportune time for the American space agency with the theatrical release of “The Martian”. The highly-anticipated film about a stranded astronaut is expected to boost public interest in a manned mission to the Red Planet.

Courtesy of 20th Century Fox via Twitter

The Martian (2015)
Courtesy of 20th Century Fox via Twitter

It’s a spectacular journey that NASA is already planning for. However, it still remains to be seen whether the cash-strapped agency can build upon this new momentum in order to transform its sci-fi dream into reality.

-Paul Yi

Discovering the Lost City of Atlantis

For centuries, people have been chasing around the globe looking for the mythical city of Atlantis based upon Plato’s account in Timaeus and Critias about a destroyed utopian city with unmatched richness and technologies of its time. From Greece to Spain and from land to underwater, archaeologists scavenged through every possible locations on earth for traces of the ancient civilization, hoping for a miracle just like the recovery of the famous city of Troy. However, what exactly is the chance that such a city existed?

According to the documentary filmed by the National Geographic, of dozens of different interpretations of Plato’s work, the most widely accepted theory for Atlantis is that it is a port city relying on trade of metals that vanished overnight some 9,000 years prior of Plato’s days. It was believed that the city was destroyed after successive tsunamis hit the city and dragged a portion of its architectures down under the ocean leaving possibly some remnants that was eventually buried up by sedimentation.

From recent years of archaeological investigations, one of the best candidates for the famous port city is probably the Doñana National Park in southern Spain. There are good number of reasons to why many, including Professor R. A. Freund, were led to think so.

First, the geographical description of Plato’s account must match the local geographic features. In his texts, Plato had described Atlantis as an island city surrounded by circular belts of sea and land, and located beyond the Pillars of Hercules. Although no islands are present in the Doñana National Park, it did match the ancient description with concentric rising and falling circles at the surface of the mudflat. As for the Pillars of Hercules, which is believed to be located in the Straits of Gibraltar, is near Spain.

“…circular belts of sea and land enclosing one another alternately, some greater, some smaller, two being of land and three of sea…” –Plato, Critias

Second, a number of artifacts had been discovered by a couple of research teams, one searching on-land and the other excavating undersea. These artifacts include small figurines that might possibly be linked to an ancient civilization on spot judging from the age of the artifacts. Off the coast of southern Spain, stones that strongly resemble man-made architectures were also found by underwater sonar. Other evidences also suggest mining of valuable minerals have been ongoing for thousand of years.

In addition, on Plato’s account, the city of Atlantis ended in a sudden, catastrophic event of earthquakes and flooding. Whether such an event ever happened, there must be evidence of ancient cataclysmic event to support the disappearance of Atlantis. As it turned out, geological markings on the coast have proven that a series of great tsunamis did actually hit the very location. The fact that tsunamis took place matched and explained Plato’s final account on the city of Atlantis.

Although the research teams are still far from verifying their hypotheses, it is amazing how supernatural stories that were once deemed ridiculous may have been true. After all, some past historians, being unreliable of their mad imaginations and lack of knowledge, can be reliable after all for their modest record of the events that may have actually happened. It is up to people, especially archaeologists, today to take these accounts seriously and not literally, and clarify them with modern scientific expertise.

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YouTube video courtesy of: Documentary TV

Hui Esther Lo

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The future of wound healing

If today you cut your hand accidentally, what would you do? I would put some pressure on the wound and a Band-Aid to stop the bleeding! However, what if you are an military doctor operating on someone who has been shot on the battlefield, and is bleeding profusely on the operating table?

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Surgery, Author: Army Medicine  Source: Flickr Commons

Modern blood clotting agents do exist, but they are slow to action and may pose health risks later on. This is where Vetigel comes into the spotlight! Created by Joe Landolina and his company Suneris, this new invention has the possibility to revolutionize the medical field.

Before we find out what Vetigel does, I will first explain how our body heals that simple paper cut on our hand. It may be surprising to know that the healing mechanisms behind a paper cut and a gunshot wound is strikingly similar. The major difference is the size of the wound, which means your body has less time to self-heal with more blood being lost every second.

Our wounds heal with special mechanisms that involve our cells, and a microscopic mesh that exists between these cells called the extracellular matrix. This matrix is also what holds your cells in place, help cells communicate with each other,  and assist in nutrient transport. When a wound heals, the human body is simply recreating this matrix with the help of other specialized cells from the immune system (Enoch & Leaper, 2005). Unfortunately, I don’t think the human body has the one type fits all kind of extracellular matrix. Instead, our bodies has to slowly recreate this extracellular matrix specifically for the site of injury.

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Extracellular matrix, Author: Alejandro Porto Source: Wikimedia commons

In my opinion, this problem of slow self-regeneration is what Vetigel tries to resolve. Vetigel™ can spontaneously assemble into the same “configuration” of extracellular matrix wherever it’s applied. It speeds up your own body’s ability to heal wounds by removing the need to slowly recreate the extracellular matrix. If you put Vetigel on your skin, the gel will self-assemble into a mesh similar to your skin`s extracellular matrix; if you apply Vetigel™ to your heart, the gel will assemble into a mesh similar to your heart’s extracellular matrix. I was truly amazed at the speed at which traumatic bleeding can be stopped, here is a video demonstrating Vetigel in action (blood warning):YouTube Preview Image

Joe Landolina`s genius is that he  realized certain polymers derived from plant cell wall have self-assembling properties. Therefore, by basing Vetigel on these plant polymers, Vetigel can automatically assemble in a similar fashion as the micro-environment it is applied on. Here’s his TED talk giving a more detailed introduction of his product:

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The future of emergency and military medicine sure looks bright, but FDA approval of this amazing product is still a few years away.  For now, Joe Landolina has started producing Vetigel for veterinary medicine, and maybe one day your beloved dog will be saved because of innovative science!

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Saving man’s best friend! Author: Austin Community College, Source: Flickr Commons

By Yu Chieh (Brian) Cheng

Volkswagen Emission Scandal

What happened?

Recently Volkswagen admitted to using special software to lower emissions during laboratory tests on some of its diesel vehicles. Resulting, in half a million cars on US roads and 11 million worldwide that may be emitting substantially higher levels of nitric oxide and nitrogen dioxide (NOx). For example, the Volkswagen Jetta emitted levels of 15-35 times greater than dictated by the US standard of 31 milligrams per kilometre, and according to Quirin Schiermeie, the Volkswagen Passat emitted 5-20 times greater as well. Compared to the BMW X5 that remained at or below the standard except during rural uphill driving. Basically, Volkswagen could not balance performance with low pollution, so it cheated according to Brad Plumer.

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Why does this matter?

Diesel exhaust is a major contributor to air pollution, diesel emissions contain carbon monoxide and NOx, both of which can have serious adverse health effects on people due to exposure. Mainly, Volkswagens manipulation of their emissions was concerned with NOx, which is a precursor to ground-level ozone and can cause severe respiratory problems according to the EPAFurthermore, the fact that Volkswagen had been manipulating their emissions tests displays the lengths they will go to ‘save a buck’ and this adds the question that are they the only manufacturing company doing this? It would come as a shock in my opinion if they are the only company to be falsifying their reports, more than likely they are the only company that got caught. This scandal has exposed problems with our current emissions tests, therefore, we can not be certain on any other manufactures doing the same until the test have been revamped and redone on the other companies.

Courtesy of Wikimedia.org

Well… What now?

Firstly, Volkswagens Chief Executive Martin Winterkorn has resigned following this scandal. As well, the EPA has announced that all new diesel vehicles will undergo tests for the purposes of investigating a potential defeat device. Nevertheless, Volkswagen isn’t getting away this easy as The Canadian Press states that “VW has already halted sales of some vehicles in the US and pledged to co-operate with regulators in an investigation that could, in theory, see the company fined up to $18 billion”, hopefully they will be held responsible for their actions and the case not be settled out of court. Potentially, Volkswagen may not be able to recover from there tainted image, as customers may not be able to ever fully trust them again.

Sourced from Carbuzz.com

Chief Executive Martin Winterkorn

 

By Mathew Golf

Here come Homo Naledi.

As it has appeared on the media,that scientist have recently discovered new species called Homo naledi,a human-like species,most of people are puzzled how to place this new covered species in the hierarchy of homo family.

Homo Naledi has some characteristics that the modern man has.For example,skull,hands and feet.
Though homo naledi has Some few features that are different from human kind,like small brain,and abnormal head,I am curious to how homo naledi found themselves in the cave.
I am curious too whether homo naledi was once the beginning of human revolution from ape-like human to homo Sappiens.

Can it be true that homo naledi has some relatives still alive now in the continent of Africa? If yes,we would be more curious to know how they revolved.So far,Scientists haven’t discovered the years at which homo naledi exists.
Fingers crossed,I am waiting.

My Grandma Can Become Stronger by Eating Apples and Tomatoes

I remember when I was little, my mom and teachers at school would always tell me: “an apple a day will keep the doctor away.” While there may not be concrete scientific evidence that supports the accuracy of this saying, Dr. Christopher Adam and his colleagues from the University of Iowa have found evidence that consuming apples and tomatoes will keep our muscles strong and healthy.

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Video courtesy of CNN NewsByJim’s

Scientists have identified age-related muscle weakness and atrophy as a common trend in both humans and animals. Such phenomenon is often caused by disuse or denervation of muscles. Generally, muscle strength will start to decline between the ages of 30 to 40, and continue to decrease for the next several decades until the age of 70, when it begins to accelerate. Simultaneously, muscle mass is also decreasing, but at a slower rate. This loss of muscle mass and strength will consequently reduce the individual’s quality of life, and increase mortality. Up until now, exercise and healthy eating are the only approved approach to slow muscle atrophy.

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Video courtesy of Mayo Clinic

 

Researchers at the University of Iowa have recently discovered two compounds that reduce muscle mass and quality due to starvation and inactivity in elderly mice: ursolic acid in apple peel and tomatidine in green tomatoes. Both these compounds are believed to turn off genes activated by the harmful ATF4 proteins that is partly responsible for the age-related muscle loss and weakness. When this protein is expressed, it causes changes in gene expression so that protein synthesis is suppressed and protein degradation is elevated for muscle cells.

In their study, the researchers fed elderly mice with age-related muscle weakness and atrophy a diet either containing or lacking 0.27% ursolic acid, or 0.05% tomatidine for two months. The results of this study were significant. When the researchers measured the muscle mass of the elderly mice fed with either ursolic acid or tomatidine, they found that the mice increased their muscle mass by 10%, and their muscle strength by 30%.

These finding are significant as they can potentially increase the lifestyle and mobility of elderly people with muscle weakness and atrophy. The next step for the researchers is to continue their investigation in human clinical trial, and see if ursolic acid and tomatidine have the same effect in elderly humans as they do in mice. Ursolic acid and tomatidine can furthermore be developed into pharmaceutical supplements than can help with muscle strengthening.

Julia He

Tomato juice tastes better on airplanes

Have you ever had a tomato juice during a flight? If you have, you should like it because tomato juice actually tastes better on flights!

Generally speaking, tomato juice is not that popular compared to other juices. However, in flights, tomato juice is one of the most popular drinks. The Lufthansa Airline which is a German airline serves almost the same amount of tomato juice as beer to passengers. How could tomato juice be selected as a popular drink at 35000 feet above ground?

tomato juice

Source: Flickr Commons

Researchers have recently found that there is a relationship between sound and taste. Prof. Dr. Charles Spence at Oxford University explained that, “noise suppresses people’s ability to taste sweetness and saltiness, but it actually enhances people’s ability to taste umami.” Therefore, it is true that the airplane’s engine noise influences the way people taste food and beverages. Furthermore, his study also proved the better taste of tomato juice in flights as tomato contains the umami flavor.

Source: Flickr Commons

Umami is one of the five tastes which was identified in 1908 by Kikunae Ikeda, a professor of the Tokyo Imperial University. It is difficult to describe how umami tastes since it is sensed when glutamate binds to specific receptors on your tongue. Various types of food such as seaweed, pork, soy sauce, cheese, and mushrooms have umami taste.

Research from the faculty of food and nutrition in Cornell University stated that people prefer umami taste in the environment with high-decibel noise. The researchers conducted an experiment on a flight. Eleven men and thirty seven women aged from 18 to 55 were asked to taste liquid with each basic five tastes (sweetness, sourness, saltiness, bitterness, and umami), first time with headphones and second time without headphones. The result showed that people with headphones claimed the four flavors except umami were strong. On the other hand, people without the headphones stated that they could taste the umami flavor to be much stronger than the people with headphones did.

Therefore, studies mentioned above on the effects of sound on taste prove the reason why tomato juice actually tastes better on a flight.

Here’s an interesting video of short experiment about the effect of sound on taste:

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YouTube video courtesy of: Brit Lab

– Lisa Inhye Kim

The Mysterious Effects of The Blob

A patch of abnormally warm water has amassed in the North Eastern Pacific Ocean, and is moving its way towards British Columbia’s coastline. The characteristic shape of the affected water has caused scientists to dub it “The Blob”.   You might be thinking to yourself that you accidentally stumbled onto a science fiction blog, but The Blob is very real, with equally real consequences for marine ecosystems.

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Sea Surface Temperature shows anomalies in the North East Pacific Ocean (http://www.climate.washington.edu/newsletter/2014Jun.pdf)

Oceanographers haven’t been able to point to a clear cause for the strange phenomenon, but they think it may be linked to the unusually strong El Nino we are currently experiencing. This summer, it has been attributed to several unusual marine observations.

A bloom of domoic acid producing phytoplankton has been seen within the blob, which has been linked to the death of approximately 30 whales that have washed ashore in Alaska. While it hasn’t been confirmed yet, toxins have been link to similar deaths in the past.

Zooxanthellae, a phytoplankton that lives in a symbiotic relationship with coral, has also been negatively affected by the blob. The warm temperatures cause the phytoplankton to become stressed, and expelled from coral reefs. Corals receive valuable nutrients from their phytoplankton partners that give them their radiant colours. Once the algae are expelled, coral reefs lose their colour, resulting in the occurrence known as coral bleaching. This has been seen this past summer in Hawaii, and leaves coral reefs with an increased vulnerability to environmental stressors. Given that coral reefs are areas of incredible diversity, containing up to one third of all marine species, understanding why the blob is occurring, and how long it will remain in the Pacific, is exceedingly important.

Due to the increase in thermal stratification throughout the blob, there is less vertical mixing, less nutrients being replaced from below which ultimately leads to less zooplankton to feed salmon. With a decrease in salmon’s energy source, scientists predict less juvenile salmon will be successful in their long trip from the estuaries out to the open ocean. Lower birth rates have also been predicted in whale species as well, given that they will need to expend more energy locating resources, leaving less available for reproduction and survivorship of young.

As warmer waters impinge along our coastlines, so do many marine species that are normally associated with warmer, tropical waters. Following the patch of warm water, Mola Mola (sunfish), triggerfish, and tuna have been spotted several times in B.C. waters, even as far north as Bella Bella.

Changes to marine ecosystems and population dynamics can be difficult to predict, given the complexity of the food webs. While the blob cannot be attributed to global warming, it does provide scientists with a unique opportunity to study the effects of a 2-4°C increase in water temperatures, and what may lie ahead for the oceans.

Sandra Emry

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