Tuesday, October 15, 2013

Dry Ice Explosives Found at LAX

The article I read this week was "The Science of Dry Ice Bombs, Like LAX's." The article was written by Brian Clark Howard. It is an interesting article because of recent events at the LAX airport in Los Angeles. On October 14, 2013 a dry ice bomb exploded in the airport, which was discussed by the national news. I had only ever heard of dry ice as a coolant, but there is much more to the chemical than that.
Dry Ice Transport Truck
Dry ice is "frozen carbon dioxide that is -109.3 degrees fahrenheit," therefore; it is very, very cold. Bombs are created when the dry ice is placed in a sealed container and allowed to build pressure. when added with water, it pressurizes faster. The carbon dioxide transforms into a gas and that is when the bomb explodes. In the case of the airport, three water bottles sealed with dry ice were found. The science is common, but it can be hurtful.
Dry Ice
The article is very informative, and it should be read by most people. Dry ice can be dangerous and should only be handled by professionals. I chose this article because it relates to current events, and it was a science that I did not know much about before.

Playing Dead: A Common Dog Trick Used Throughout The Natural World

The article that I read for this week was "5 Trickster Animals That Play Dead" by Mollie Bloudoff-Indelicato. I found it on nationalgeographic.com and it discusses several animals that "play dead." I chose this article because it continues my trend of fascinating animal anomalies.

The first animal that can "play dead" is the lemon shark. The lemon shark will stop moving if it is placed on its backside, which is a great time for research to be done on the sharks.
Lemon Shark
The second animal is the Central American cichlid. The cichlid has unique patterns on its body that make it look like it is decaying. The cichlid's prey comes close to the apparent dead animal and then are surprised when they turn into dinner.
Central American Cichlid
The third animal is the common duck. Ducks will often "play dead" to avoid predators, and their act is entitled "tonic immobility." I think this is interesting because ducks are a common species, yet I have never seen them act this way!
The Common Duck
The fourth animal is actually a group of animals including pigs, goats, and cows. Scientists are not sure why they "play dead," but they have been known to do this. Next time we pass the cows on the interstate I'll be sure to be on the lookout!
The Common Cow
The last animal that has learned to "play dead" is the baby brown snake. The snake will "play dead" if it is threatened by animal or human. This snake would win in a staring contest.
Baby Brown Snake
This article interested me because I find animal anomalies to be fascinating. I have done a couple blogs on animals before, but I find each one to be different and equal in importance. This is another example of animals' ability to adapt to surroundings and to protect themselves. These articles explain the natural world and the traits that animals have that are found in humans as well. These animals can tell us a lot about human nature and our natural defense mechanisms.