Sunday, August 17, 2014

Overfishing

   Currently, one of the biggest issues on earth is overfishing. Most people on earth rely on the ocean for their daily live hoods. It is also a primary source of our protein. So marine creatures provide us protein and food to live our lives everyday. However, people overfish due to the lack of management and carelessness.
 
   First of all, overfishing is the act of fishing too much that the fish cannot sustain their population. The thing that is causing over fishing is that our fishing fleets are two or three times bigger than it should be. Reason that overfishing is such a big threat to us is because we are losing  species as well as our whole ecosystem. In addition, we are losing our precious food source.
 
   Overfishing is also a huge problem because there is a huge imbalance in the marine life. There will not be enough breeds, which will decrease the amount of fish in the ocean. Overfishing doesn’t only kill the fish that are targeted for food but also other sea animals as well. For example, dolphins or sea birds have been caught in the fishing gear and got killed. Most of them are when they are catching shrimp. So for every one kilogram of shrimp, up to nine kilograms of other marine animals are caught. In the last 60 years, the fish stocks as fallen by 90% due to overfishing. The scientist says that we are facing the collapse of all types of fish. In 2008, fishing limits where defined for the highly prized blue fin tuna. The scientists recommended a fishing limit of 10,000 tons. However, they ended up catching 60,000 tons of tuna, which is 6 times more than the scientists’ limit. So the amount of fish in the ocean is decreasing at a very fast rate due to overfishing.

   We should try our best to prevent it from happening. How we can do this is that our politicians have the responsibility to make the decisions. We citizens have the rights to persuade them to make these decisions happen.

The video below descriptively tells us why overfishing is such a big problem and how it is affecting our lives today. 
  

       Video: Ending Overfishing from OCEAN2012 on Vimeo

Thursday, August 14, 2014

In the past few days, heavy rain has caused flash flooding and structural damage here in the North-Eastern corner of the United States. The storm system, that has also been responsible for the unusually destructive weather in the Mid-West, has both wreaked havoc and confused inhabitants. Heavy rains aren’t usually supposed to come in the early fall when the air is dry. The 14-year long drought of the Colorado River Basin has likely amplified the effects of the storm.


Why do such weather abnormalities occur with increasing frequency? One article from National Geographic blames greenhouse gases and aerosol emissions. Most notably, the study, carried out by various research groups in the US and China, pointed out that aerosol emissions from rapidly growing economies in Asia are a major factor that contribute to the worsening severity of storms. Sulfate, for example, is released into the air from burning coal and, once in the air, allows more water droplets to form within clouds by increasing the surface area droplets can form on. As a result, we see larger storm clouds and heavier rains. Realizing that the economic activities of a developing nation can affect countries around the world may be key to reducing air emissions.