Category Archives: Science/Nature

Black holes

Black holes are not just holes floating through space. Black holes are an area with massive amounts of matter squished in tiny areas. Because of all that matter stuck in a tiny area, the gravity that it releases is so strong not even light can escape. And since it even consumes light, that means that you can’t even see them. Scientist observe black holes by the effect on the surrounding area.

Black holes were predicted by Albert Einstein’s theory of relativity. According to NASA’s website, he predicted, “which showed that when a massive star dies, it leaves behind a small, dense remnant core. If the core’s mass is more than about three times the mass of the Sun, the equations showed, the force of gravity overwhelms all other forces and produces a black hole.” The first black hole was discovered in 1971.

Black holes have many weird properties to them that make them very unique. As was stated earlier, they are invisible, and they also take in all things around and tear them down to their subatomic level. According to a post on NASA’s Universe Forum, black holes also seem to slow down time around them. They are also predicted to release radiation; this radiation is known as Hawking radiation named after Stephen Hawking. Black holes leave this radiation theoretically until they completely evaporate.

Black holes are created when a large star dies. A star dies when it runs out of fuel for nuclear burning, and because of this the star collapses on itself causing a supernova.

After we are left with either a neutron star or a black hole. In order to get a black hole the core needs to be at least 3 times the mass of our sun, thus meaning if our sun went through this process it still wouldn’t make a black hole.

There are 4 main types of black holes which are: supermassive black holes, intermediate mass black hole, stellar black hole, and a micro black hole. The difference between all of these is their solar masses which can range from 5 solar masses all the way to an immeasurable amounts of mass. There is one other type of black hole, which is the most common one, which is characterized by its rotation, which is known as a Kerr black hole.

Endangered animals – Part 2 in a multi-part series about the environment

A red panda (Ailurus fulgens) image taken from: https://www.mindfood.com/article/endangered-animal-day/

Have you ever wondered which animals are and aren’t endangered? The answer to that is very long.

Let’s start with what an endangered animal is before this article gets started. An endangered animal is, according to wonderopolis, an animal that is in danger of going extinct. There are sadly so many animals that are becoming endangered by humans. We are destroying their habitats, and their homes. How do you think you would feel if someone was taking away your home because they needed land to build apartments and cities for themselves?

The list of endangered animals goes on and on. From African wolf dogs, to green turtles, to many more. The list goes on and on, on the World Wildlife website about the different types of animals that are endangered.

The Amur leopard is one of the more critical animals. An Amur leopard is commonly found in a forest in Asia. These leopards are endangered because they are being taken for their gorgeous fur, of which is spotted. For more information about the Amur leopard, please visit: Mnzoo.com or World wildlife.com

Another animal that is in critical danger is the black rhino. A black rhino is going extinct because hunters are hunting them for their horns, which have an ivory color. This ivory color can be sold on the black market. As well as their horns, the rhinos habitat is slowly dwindling away. You can actually help these rhinos. You can raise awareness on World Rhino Day. Just by raising awareness of this issue can cause local donors to donate money for veterinary care. This money can also help to bring education of what hunting is doing to their population. The rhinos populations is already very small. For more information about the black rhino, please visit: Animalplanet.com

The Bornean orangutan is another of the of the more critically endangered animals. These orangutan’s habitat is becoming smaller and smaller due to deforestation and cleaning the land for plantations. The logging of trees is affecting the orangutans because they spend almost all of their time in the trees. Another thing is that the smoke of fires confusing them, which leads to them becoming very susceptible to death because their habitat is being burned down. You can help young infants that have been taking from their mother by adopting a little orangutan. It’s only $65 a year. Please visit Theorangutanproject.org for more information.

Lastly, the Cross River gorilla is critically endangered. There is about 300 individuals that remain. This gorilla is the most endangered African ape as of 2013. These gorillas are endangered because of hunters wanting to hunt and trade their meats. For more information, please visit: Birdlife.org

As you can see, all of these, and other animals, are endangered because of hunters and humans caring more about profits than these poor animals.

Daylight saving time

image taken from: https://fpcinsider.wordpress.com/2013/03/08/spring-forward-this-sunday/

This year, Daylight Saving Time (DST) fell on March 10, 2019. By moving the clock ahead one hour we are able to make a better use of daylight. During the summer the sunlight is out for a longer amount of time than in the winter. Each country/region has its own time/date to change its time. People who live near the equator don’t have to change their time because in that area there is 12 hours during the day and 12 hours during the night.

According to webexhibits.org there has been a poll made indicating that people in the United States believe that daylight saving is because there is more sunlight in the evenings during the summer. Since there is more sunlight during the evening there is more time to enjoy the long day and to have fun.

Daylight saving may conserve energy, because during daylight saving the energy we use is cut by a very small yet significant amount of energy. About one percent of energy is lost a day, because there is less electricity/lights that are needed during the day. When electricity for light is used, it’s mainly during the night when people are about to sleep, but since evenings have more sunlight, there is a smaller amount of electricity needed to be used.

If you hate daylight saving time, no worries, the end will come on November 3, 2019. After daylight saving time ends, you will be able to move the clock back one hour. Usually, the time changes at 2A.M. whether or not going forward one hour or backwards one hour.

One positive you can get out of daylight saving is having more time to enjoy fun things, and a positive for the end of daylight saving is that you get more sleep.

Pollution in our oceans – Part 1 in a multi-part series about the environment

By Delaney Sis and Na’Riyah Johnson

Have you ever wondered how much plastic is actually in the ocean?

Plastic doesn’t decompose, like other wastes, and according to theoceancleanup.com, there are 5 different offshore areas that have accumulated 1.15 to 2.41 million tons of plastic. These areas of plastic are called the Great Pacific Garbage Patch (GPGP). These patches are the largest accumulated areas ranging from Hawaii and California. The GPGP covers 1.6 million square kilometers. That’s about twice the size of Texas and three times the size of France.  

Image taken from: https://inhabitat.com/peanut-the-story-behind-the-poor-sea-turtle-deformed-by-a-six-pack-ring/

You may be asking why we should care; well according to the National Ocean Service website, 700 different marine species encounter debris. Sadly, 92% of the debris these species come across are plastic. Only 17% of the debris are on the list of threatened animals. There is 180x more plastic than marine life. Also, marine life can get entangled.

Some ways that debris enter water are from the rain and winds. For example, when you leave a water bottle on the ground and it rains, the rain water will carry it to the sewer, and it ends up in our rivers, streams, and lakes.

Some ways you can help with this issue is by using less plastic, recycling more, and helping with cleaning/volunteering or participating in shore cleanups.

Some other ways that you can help with this issue is by putting trash into designated areas. You can also help by using no plastic straws or plastic cups.

Starbucks was the business that first announced they were moving from plastic straws, to more compostable straws. You may be wondering why, well 4% of the plastic in the ocean is made up of straws. An average person uses 1.6 straw a day. This mean that 25,000 people have stopped using straws. For more information about plastic straws, please visit: https://squareup.com/townsquare/why-plastic-straws-are-being-banned

 

Lunar tetrad

On January 20 and 21, a full moon, Wolf Moon, Supermoon, and a total lunar eclipse took place.

In 2019, there will be 3 solar eclipses and 2 lunar eclipses. On January 20, the first full moon and first lunar eclipse happened.  The lunar eclipse is being called a Blood Moon because the sun Earth and moon line up and the moon passes through the Earth’s shadow making it a reddish color. A NASA scientist said, “The exact color that the moon appears depends on the amount of dust and clouds in the atmosphere” so it can appear more red depending what’s in the atmosphere.

During the Blood Moon, a meteorite hit the moon. It was very unexpected but according to Space.com that’s how the moon gets it craters. 

There are 3 types of lunar eclipses, total, partial, and penumbral. The first lunar eclipse of the year was a total lunar eclipse meaning Earth’s shadow completely covered the moon. A Blood Moon will usually happen  twice every three years. However, it depends on the  number of total lunar eclipses during a year. 

The Wolf Moon was named by some Native American tribes after wolves would howl loudly outside their villages, but this year’s Wolf Moon was also a Supermoon. A Supermoon is a full moon that is at the moon’s closest point to Earth.

There will be 6 eclipses in 2019, depending on where you live. There was a solar eclipse on January 5, and a lunar eclipse on January 20.  There will be a solar eclipse on July 2, and December 26. There’ll be a lunar eclipse on July 16. On November 11, there will be a transit of Mercury, meaning Mercury will directly pass between the Sun and another planet, and Mercury will appear as a black dot moving across the Sun.

Climate change is real?

How many times have you walked outside this winter with only a sweatshirt and jeans on? No winter jacket or coat. Or still have those new pair of Sorel boots in your closet that you were so sure you we’re going to have to wear this winter? If this sounds like you, you are not alone. Temperatures this Minnesota winter have been so mild it almost seems unreal. The snowfalls have been mild, the temperatures have been mild, and the snow seems to barely stay on the ground. Believe it or not, Minnesota is facing the disastrous climate change going on in our world, and the direct effects are becoming prevalent.

Since the 1980’s, scientists have warned us about the disasters our earth was up against if we didn’t start taking better care of it. Big companies like Chevron, Exxon Mobil, BP, and Gazprom, as well as chemical manufactures, industrial dumpsites, tanneries, and product manufactures are all environmental hazards that are destroying our earth. These companies continue to produce pollutants into our environment, creating oil spills, and putting Co2 emissions into our air. Due to these pollutants, more cases of illnesses, like cancer, are rising and they are causing our earth to heat up.

Antarctica is a continent covered by a of majority of ice, and it is starting to be affected by the heating of our earth. Major ice glaciers are starting to break and melt.

Animals like penguins and polar bears are having a habitat crisis because it’s harder to catch fish. Polar bears are falling into the water and drowning due to thin ice, and fish are starting to migrate.

On top of the effects of animals, the effects on our lakes and oceans are also a risk. As ice glaciers melt, water levels continue to rise. The mixture of saltwater and freshwater is creating a higher buoyancy which is causing floods, hurricanes, and water levels to rise at extreme rates.

Minnesota has been affected by climate change, our lakes are starting to rise and there have been a lot of rainy days this winter season. Just this past month, we have had one of the warmest Minnesota winter days ever, with a record breaking 42 degrees in the beginning of January.

Where do people originate from

Humans, or by their scientific name homo sapiens, belong to a group called hominids. Creatures in part of the hominids group, are the earliest known human like creatures. A trait that is commonly shared among hominids is the ability to walk on two legs or bipedalism. According to Khanacademy.org, it’s believed that hominids started to separate from other primates between 2.5 and 4 million years ago, around eastern and southern Africa.

There are many theories to why the early hominids begun to evolve. One theory was that with the expansion of the savannah, it slowly forced their homes in the forest to shrink. Because of this, it may be one of the reasons we started to rely on walking upright, on the ground, rather than continuing to climb trees.

As hominids continued to evolve, they gained more unique traits and characteristics. One of these characteristics was that their brain capacity was increasing, and then a species of hominid, homo habilis, began using tools around 2.3 million years ago.

Then, around 1 million years ago, some species of hominids, such as homo erectus, began leaving Africa and moving towards Europe and Asia. And when they arrived, they began making important advances like being able to use fire.

The first modern humans happened around 200,000 and 300,000 years ago. And the ability to use language happened around 50,000 year ago.

Later, between 70,000 and 100,000 years ago, modern humans began leaving Africa to ocupate Europe and Asia. The first humans reached Australia by around 35,000 and 65,000 years ago.

According to scientists, during the Pleistocene Ice Age, a land bridge was created, connecting Asia and North America around 13,000 years ago. It is believed that people came to America from Asia by this land bridge.

Staff editorial – Phthalates, the controversial chemicals with the weird name

Cosmetics have become a prominent part of American culture, so much that few of us stop to think of the repercussions of constant usage, or even consider what exactly we are welcoming into our bodies. When I surveyed 280 Highland Park students, 79% admitted to not reading the labels before buying or using a cosmetic or beauty product. This is basically condoning the use of potentially harmful chemicals in our cosmetics. Now is the time to get informed and to stop this mindless consumption.

One particular group of chemicals, known as phthalates, have been in the news a lot lately. Of the students I surveyed, 95% responded “no” when asked whether they knew what phthalates were. Many have never heard of them, but everyone is likely to come in contact with them daily. Although these chemicals have been banned from products in the European Union, phthalates are still used heavily in American products. A study by U.S. Centers for Disease Control and Prevention tested 2,500 individuals and found 97% had molecules of at least one type of phthalate in their bodies.

Phthalates are a group of chemical compounds that are clear and oily, and used in almost everything from children’s’ toys to blood storage bags in hospitals.  Phthalates, or “plasticizers”, soften the texture of plastics and cosmetics. They also cling to skin, which allows products to last longer and retain scent or color for more time. A rule of thumb to go by is that basically any product with a fragrance, be it deodorant, perfume, body wash, or lip-gloss, is likely to contain phthalates. Of the students I surveyed, 95% said they use cosmetics or beauty products including shampoo, deodorant, and lotion on a daily basis.

So what could this cost us? Research on phthalates is varied. Phthalates are a possible carcinogen, meaning that research shows that they are related to cancer. They increase the amount of breast cancer cells in women’s’ bodies and they are endocrine disruptors that offset hormone balance, causing early puberty and breast development in girls. Two pediatricians, Dr Shanna Swan, an epidemiologist, and Doctor Howard Snyder, a urologist at Children’s Hospital in Philadelphia both studied baby boys and the relation of chemicals to abnormalities in their hormones. Dr Swan found that baby boys that had more reproductive organ problems and low sperm and testosterone levels consistently had mothers with higher levels of phthalates in their urine at the time of pregnancy. These developmental problems relate to reproductive organs, and low sperm and testosterone levels in adult men as well. Dr Snyder links hypospadias, a condition that has tripled in the last forty years, to chemicals, especially phthalates.

On a container, phthalates are labelled as DEHP, DBP, DMP, MEP, and most commonly, DEP. However, even if none of these chemicals are listed on the product, it may still contain phthalates due to loopholes in the law regarding product ingredients. Companies are not required to state ingredients in their trademark “fragrance,” so there is no way of determining if a product is completely phthalate-free.

According to the Food and Drug Administration and the Consumer Product Safety Commission, there is not enough solid scientific evidence that points directly at immediate negative outcomes of phthalates to spur legislation. Companies say that phthalates are relatively safe and pose no health risk. A prime concern is that if phthalates were banned, a substitute would have to be developed that would be new and untested, which could potentially be even more toxic. Furthermore, companies insist that phthalates are not harmful unless used in high dosage, and the small phthalate content in their products isn’t truly harmful. However, in 2008, congress passed a bill that outlawed phthalates in children’s toys, which seems to indicate differently. This legislation doesn’t seem to support the notion that phthalates are entirely safe.

The phthalates debate has still not yet been ended with conclusive data. Regardless, it is good to be informed. Because of the controversy, it would be safest to choose products that do not contain phthalates. It falls to the consumer to decided what they do and do not want in a product. Say no to phthalates by not buying products that clearly contain phthalates, at least not until more conclusive research is done.

Also, remember that phthalates are not the only potentially unsafe chemicals that find their way into our cosmetics. As the consumers, we have the power to change this.

To learn about skin products with safe ingredients visit: http://www.ewg.org/