Posts Tagged ‘Science’
This month, we will examine the issue of pathogens.
Pathogens: A pathogen is an infectious agent which can cause illness through genetic altercation.
Various examples of pathogens include viruses such as the Spanish inflienza in 1918, where the victims were healthy young adults.The illness lasted for over two years and was responsible for over 50 million lives.
Another example of a pathogen, is the Sars Virus. Take look at a photo of the process in which this virus used to spread, directly below.
What other examples of pathogens do you know ? Share them in the comments section with us!
In follow up of last month’s fact which covered The Theory of Natural Selection, we will now look at the Theory of Social Darwinism [ Survival of the Fittest], which misused the theory of Charles Darwin’s, Natural Selection by applying it to the social and political world.
The Theory of Survival of the Fittest was first coined by English philosopher, Herbert Spencer. The theory involved various nationalities and races believing that they were superior in strength and intelligence and thus possessed the right and obligation to dominate over the other “inferior” races, who were believed to lack these qualities. They believed that these “inferior” races would ultimately be conquered or replaced because of their “natural disadvantage.”. Those who accepted this are known as Social Darwinists.
Although this theory is no longer accepted by reputable Anthropologists today, there are many unjust examples from the past which demonstrate this behaviour. One such example is the cruel treatment of Aboriginal people in North America during the time period.
Do you have any other examples to share? Share them in the comments section.
Did you know about the Theory of Natural Selection? This month , in our one – hundreth post, we cover the premise of this scientific theory.
The theory of natural selection which was formed by Charles Darwin is that no two members of the same species are exactly identical. This is due to differences such as biological inheritance and the ability to partake in environmental adaptation. Over time some members of a species will develop physical features which enable it to survive while others will not and thus die. Those who survive will procreate , ultimately creating a new species.
Proof to support this theory is how recent genetic studies link all of us back to a common African origin. This shows that we have evolved, thus explaining why we have a variety of different physical features/ looks and cognitive abilities.
What are your thoughts on the theory?Do you have any additional proof to support it?Do you have reason to disagree with it? Sound off in the comments section below!
With LOST just having ended last week,it seems appropriate to have this month’s Science Fact of the Month tie into the series. We will therefore be covering electromagnetism
The basic premise of electrical magnetism is that electricity is being transported through a wire . By being transported through a wire, a magnetic shield is created in the surrounding area.
Some examples of objects created by electromagnetism include tape drives, speakers, motors, e.tc.
It should be noted that virtually all movement/ actions are due to electromagnetic forces which react on charged protons and electrons.Remember, that this also includes the pushing and pulling effects when an object is being moved.
As LOST viewers are aware, the original Oceanic flight 815 crashed due to a spike of electromagnetism which was not contained as the hatch responsible for doing so was not being monitored by its keeper, Desmond Humes.Take a look at the scene of the crash directly below.
Here are 5 measures which can be easily undertaken to help prevent water pollution
1. Help conserve water by shutting the tap when you do not require it to remain operational. For example, if have wet your brush then you should keep the tap off while you are brushing instead of letting it run the entire time. This will help prevent water from being wasted and reduce your monthly hydro bill.
2.Do not dispose of items such as paint or oils down the drain or toilet.Appropriately place such items in the garbage or recycling cans.
3.Only operate the dishwasher when it is full or you are sure that no further dishes will need to be loaded later on. This way you can do fewer washes which will not only conserve water but also reduce your hydro bill and save time. Also, if you are washing your dishes, ensure that you are not using any soaps which contain the contaminating phosphates.
4. Avoid littering bodies of water such as ponds , lakes, or oceans. Instead you should dispose of uneeded items in the garbage cans or recyclying boxes.
5.Avoid using an excess of fertilizers and pesticides as such substances can contaminate water in the environment as they can easily enter local runoffs during rainfalls.
Did you know that there are over 4000 ingredients in a cigarrette besides tobacco?Many of these are poisons, intoxicants and other dangerous subratances whih can severely damage one’s body. Take a look at some of these directly below!
Ammonia A household cleaner
Butane – gas , used in lighter fluid, affects nervous system
Cadmanium – used in batteries, damages kidneys and lier
Cyanide – deadly poison
DDT- A banned nesticide known to cause exremele damage to the digestive system of those in higher tropic levels [ humans are esppecially at risk since we are apart of the highest tropic level!]
Methropene – insecticide
Polonium- cancer causing radioactive element
Have you found other substances ?Share them in the comments section!
Did you know that nitrites in drinking water can permenantly damage or even kill infants? Read our full overview further below.
High levels of nitrates in drinking water pose a threat especially for young human infants because humans and other animals usually have a bacteria that converts nitrates into nitrites within the large intestines.While adults are protected from the harmful effects of these bacteria[since the digestive system of human adults is highly acidic], the stomach of an infant being very low in acidity , lets the bacteria move up in the stomach where nitrates are subsequently converted into nitrites.This is a serious issue as nitrites pose a serious threats to creatures which contain hemogobin[ such as humans] in their blood as nitrites can attach themselves to the hemogobin in the blood of infants .As a result of this attachment, the infant’s body is unable to receive a proper supply of oxygen to its tissues.Significant permenant damage can result.
Remember, that we welcome your Science Fact of the Month. Feel free to send it to us at firstname.lastname@example.org All submissions should include a fact with atleast a couple of sentences which provide supporting details on the fact. Including a reference is encouraged.
Here are 2 disadvantages with respects to applying pesticide on crops.
-Thepesticide kills by operating as nerve gases,acting by preventing electrical messages to the from travelling from the brain to muscles that control the breathing or limbs.This not only kills the pest, but also other larger animals[birds, reptiles, birdsm amphobians and fish] who have a similar nerve actions.
-Breaks down quickly in the soil, so the pesticide must be applied to crops more often.This means that a great deal of money will have to be spent on the pesticide as an abundant supply will needed.Also, appplying the pesticide on a more regular basisrequires a lot of time.
Do you know of any other disadavntages?Share them in the comments segment further below!
See you next month!
Did you know that the addition of nutrients to an ecosystem can be quite deadly?
An excess of nutrients in fertlizer rerun off from farms can cause a signifcant growth of algae causing an algal bloom.Eventually these algae will die and decomposing bacteria, will, in turn break down the algae .Unfortunately, the decomposing bacteria requires a lot of oxygen to do this.Since they are depleting the levels of oxygen , fish and other aquatic `creatures begin to die .Not only can severe ecological damage occur, but also the decline in fisheries can cause a negative effect on the economy.
See you next month for more Science.
Global warming is the increase of the average temperature of the earth’s atmosphere.This increase results in drastic negative climate changes.Such changes are usually initiated as a result of the greenhouse effect.
The greenhouse effect is when the earth’s atmosphere traps radiation from the sun due to the presence of various gases such as Carbon dioxide, methane and water vapour whichallows the atmosphere to absorb heat radiated from the surface.
Be sure to take a look at our Enviornmental Tips post in theJuly 2009 icon on the sidebar to find out various initiatives which can easily be launched to prevent global warming.