Sunday, December 7, 2014

Legalizing Marijuana - A Change in the "War on Drugs"


Marijuana, also known as cannabis, hemp, pot, and weed, has been used by humanity for thousands of years. It was most commonly used for making materials such as clothing, paper, and rope. Every part of the marijuana plant can be used, from the seeds to the fibers. Even the oils from the plant can be used in various products. Marijuana is believed to provide medical benefits for cancer and AIDS patients, as well as controlling nausea or vomiting.  Some forms of marijuana include: hemp, hashish, hash oil, and hemp fibers. There are many different strains of marijuana, and female marijuana plants tend to be the most potent. The most common and potent are Purple Haze, Hindu Kush, Early Girl, and Big Bud. Marijuana is a lot stronger now than it used to be due to purposefully breeding stronger and more intoxicating strains.
The biggest problem with legalizing marijuana is the debate over its benefits. Currently, marijuana is classified as a Schedule 1 drug, meaning it has no accepted medical benefit and it has a high possibility for abuse. This is the most dangerous drug schedule, and other drugs in this category include heroin, LSD, and ecstasy. Despite the government’s labeling of the drug, however, many believe that marijuana does not meet the criteria under the Controlled Substances Act to be a Schedule 1 drug, as there are potential medical benefits and the drug is not as toxic as other Schedule 1 drugs. The most dangerous chemical in marijuana is THC, which can affect brain development, learning, memory, and perception. The biggest health concern for marijuana is its effects on the mental health and development of users. It is also addictive, contrary to common belief, and can cause many of the same respiratory problems as smoking cigarettes.
Despite the potential health hazards that come with the recreational use of marijuana, majority opinion seems to be shifting. Many people support the legalization of marijuana because of the various economic and legal benefits. Colorado has already seen significant revenue increase since legalizing marijuana in September 2013. Taxes placed on the businesses, suppliers, and even the product itself have generated millions of dollars in state revenue. The new source of revenue for states who have legalized marijuana can help fund everything from healthcare to schools. Many supporters of legalizing the drug point out the enormous economic benefit for our country.
Another big argument in support of legalizing marijuana is the effect it will have on the “War on Drugs.” Currently, Mexican drug cartels are the biggest suppliers of illegal marijuana to the U.S., and they gain incredible profits from charging Americans for the illegal product. Many believe that legalizing marijuana in the U.S. will damage the cartels, lower their profits, and decrease drug violence in Mexico. On top of that, the decriminalization of marijuana possession, growth, and use will remove a drastic number of people from jail and give law enforcement more time and money to devote to controlling more violent crimes.
While many argue that marijuana is a “gateway drug” and that the health problems are worse than the benefits, most supporters argue that legalization will give the government more control over the trade and use of marijuana. Currently, marijuana use and trade is almost completely unregulated due to its criminalization, so this renders it even more dangerous to users. If the government is able to regulate marijuana, they can potentially reduce or remove some of the harmful effects of the drug. For example, the government may put out regulations for the potency of marijuana, how much of more potent drugs can be sold, and what additives can be in the drugs. Overall the benefits of legalizing marijuana seem to outweigh the negatives.

Sources:


Wednesday, November 12, 2014

Hydrogen Fuel Cells - The Future of Clean Energy?

A diagram of how a hydrogen fuel cell would work in a car
Hydrogen fuel cells are an alternative energy format powered by, you guessed it, hydrogen. They are typically used in stacks to help increase efficiency and power. Hydrogen fuel cells have three parts: an anode, a cathode, and a proton exchange membrane between them.  Hydrogen enters the anode and oxygen enters the cathode. The hydrogen is then split into an electron, which provides energy to a motor, and a proton, which continues to move through the fuel cells. The electron and proton join up again at the cathode side, join with the oxygen, and water is released. Water is the only by-product of a hydrogen fuel cell, making it an environmentally-friendly alternative with potential to solve fresh water problems. In fact, hydrogen fuel cells used on space shuttles were used to supply fresh water to the astronauts on board.
How hydrogen fuel cells work in a space ship
Hydrogen releases less CO2 than gas
In order to work, a hydrogen fuel cell needs a continuous supply of its energy source, in other words, hydrogen and oxygen. Oxygen can be pulled from the air outside the fuel cell, but obtaining hydrogen is much harder. Hydrogen can be difficult to obtain. Currently, hydrogen is collected from industrial waste, propane, methane, and other sources that require high power to generate, but hopefully in the future hydrogen will be harvested from renewable resources. There are fuel cells that can potentially run on water, but the concept is very controversial due to Stanley Meyer’s falsified water fuel cell. An easy to access hydrogen source would need to be found or created before we can power the world on hydrogen fuel cells alone. Plus, fuel cells are still relatively expensive to manufacture, however their price is expected to drop dramatically in the future.
The Hyundai Tucson Fuel Cell car
To make hydrogen fuel cells work on a large scale, some sort of hydrogen infrastructure needs to be developed to distribute hydrogen where needed. Hydrogen fuel storage and conversion methods are currently in development, yet they still need a lot of work. Hydrogen can be transported as a gas or liquid through current energy transportation methods like pipelines and trucks, but for the most part hydrogen could be produced on-site at power plants, fueling stations, and anywhere else it may be needed for fuel cells. Integration into currently existing structures may be somewhat difficult and places requiring hydrogen for power may need to be retrofitted to produce hydrogen. Hydrogen fuel cells could be part of either a centralized or decentralized system, it just depends upon the decisions of those who implement it. Hydrogen fuel cells can be modified to run off-grid, they just need to have some source of hydrogen in order to work.
Hydrogen fuel cells have already been used for transportation, from powering space shuttles to prototype cars like the Toyota FCV or the Hyundai Tucson Fuel Cell. For the hydrogen fuel cell cars, there is a problem with lack of hydrogen fueling stations, but that is something that can easily be remedied by a change in infrastructure. Already steps have been taken to encourage people to adopt hydrogen fuel cell technology. There are currently a federal tax incentives and credits for people who use residential hydrogen fuel cells, businesses who invest in hydrogen fuel cells, and stations who build hydrogen fueling stations. Many companies who manufacture hydrogen fuel cells are actively working to lower manufacturing times and increase their output in order to make these products cheaper and more available. Many people are motivated to invest in hydrogen fuel cell technology because of their concern for the environment and the promise this fuel type holds for the future. Overall, many believe that a “hydrogen economy,” or a world where hydrogen is the main source of fuel, is in our future, and hydrogen fuel cells help to bring us closer to that future.


A video of a DIY hydrogen fuel cell. This man is NOT a professional, so I don't recommend actually attempting to use his prototype to power your car, but it's still interesting how he got it to work.

Sunday, November 2, 2014

Major Disasters - The Halifax Explosion





The location of Halifax, Nova Scotia
The Halifax explosion is the largest man-made non-nuclear explosion in history. It occurred in Halifax, Nova Scotia in Canada on December 6, 1917. The explosion was caused by the collision of two ships, the SS Mont Blanc and the SS Imo. Overall the cost of damages equaled about $545 million modern Canadian dollars, which equals roughly $483 million U.S. dollars. About 6,000 people were left homeless and over 25,000 did not have adequate housing after the blast. On top of that, the native Mi’kmaq people’s settlement was destroyed and abandoned. Most of Canada’s civilian casualties of WWI are because of the Halifax explosion.
The location of the ships as they moved in the harbor
The SS Mont Blanc was a French ship carrying explosives and munitions to Europe to be used in WWI. The SS Imo was a Norwegian ship headed for New York City to pick up relief supplies for war victims in Belgium. When the two collided, a fire broke out. About twenty minutes later, the explosive cargo on the SS Mont Blanc blew up, launching debris and destroying all buildings within a half-mile radius. Because the initial collision forced the ships toward the shore, the damage was much more severe. Over 1,800 people were killed, 9,000 were injured, and 1,600 homes were flattened. Windows were shattered up to 50 miles away, and the sound could be heard hundreds of miles away. The biggest issues after the event were finding shelter for those whose homes had been destroyed and rebuilding the structures damaged by the blast. Unfortunately, just a day after the event, a blizzard hit the town, hampered relief efforts and survivor searches, and knocked down re-erected telegraph lines.
The pier before the explosion
The pier after the explosion
The SS Imo after the explosion
Originally the explosion was thought to be a German attack, and the helmsman of the SS Imo was actually arrested on suspicion of being a German spy. The local paper also helped to stir up fear that the event was German-based. Eventually, the truth came out, and the blame was placed on the captain and pilot of the SS Mont Blanc and the chief examining officer of the Royal Canadian Navy in charge of the harbor. A major cause of the explosion had been the French’s use of older ships to carry dangerous cargo because German U-boats kept blowing their ships up. These ships were often not well maintained and thus not equipped to handle problems like the fire. Both ships had been delayed in departing and arrived because they came after the harbor’s anti-submarine nets were raised. The SS Imo had also been going well above the speed limit, the traffic in the harbor that morning was high, and the Imo was moving on the wrong side of the harbor. After a brief signal exchange between the two ships, neither the Imo nor the Mont Blanc yielded their position and the ships collided. The crews abandoned their ships, and while the crew of the Mont Blanc should have flown red flags to indicate the danger of their cargo, they did not because of threat of submarine attack.


Another view of Halifax after the explosion
The pyrocumulus cloud from the explosion

While the town of Halifax was certainly not prepared for an explosion of such magnitude, their firefighters were quick to respond to the fires that broke out on the ships and did their best to put them out before the explosion. The Halifax fire department also assisted in minimizing the damages and chaos after the explosion. Vincent Coleman, the local Intercolonial Railway dispatcher, likely saved hundreds of lives by warning incoming trains of the imminent explosion. He heard that the Mont Blanc was carrying explosive cargo and remained at his station until he heard that the trains stopped, costing him his life. The community used the destruction of the town’s North End to modernize the area, building homes with special fire-proof blocks. The local poor house became a shelter and hospital for victims of the explosion and was "rendered great service to the people of Halifax." Hundreds of people and organizations from all over helped with rescue efforts.

 
A first-hand account from a survivor of the explosion