Friday, January 9, 2009 @
10:41 AM
topic for discussion :
What I think about global warming.
-search on what global warming is about.
There is no doubt that the earth's climate is constantly changing. Some people feel that it is part of the normal cycle of events on this planet. Yet, most scientists agree that there are drastic changes occurring that are due to unnatural global warming.
The weather is getting decidedly warmer. For the most part, the United States has already warmed up some. In some places, the average rise in temperature is around four degrees Fahrenheit. However, all the states show some degree of warming.
The first and second warmest years on record were 1998 and 2006, respectively. In fact, every year from the first to the second warmest years, ranked within the warmest 25 years in the US. In 2006, the annual average temperature was 55 degrees Fahrenheit. Recent warm years point to a climate change being brought on by global warming.
Climate changes due to global warming can be seen in the prevalence of drought. Years are becoming drier in recent decades due to global warming. This is caused by the heat that is building up around the earth's surface. Excessive evaporation intensifies drought even more during the spring and fall.
Global warming has upped the level of drought. A major drought in the US lasted from 1999-2002. There were only two other droughts in the last forty years that were so widespread and devastating. Crops were damaged or would not grow at all, thus shortening the food supply.
There have been more and more frequent droughts in the West in recent years. The last 30 years in particular have seen numerous droughts. These droughts have spawned wildfires that set new records in 2006 for number of fires and of acres burned. Further proof of global warming is seen in these destructive wildfires.
While the overall effect of global warming is heat followed by drought, there are still storms. Since global warming energizes the atmosphere, these storms will be different. When all is going well, a gentle rain will soak into the earth gradually, causing no more than a minor inconvenience to people.
Because of global warming, storms are becoming more destructive. While there have certainly been droughts, rainfall totals have risen in the past century. This surprising fact is due to the fact that when the rain comes, it comes in rapid downpours. The sky opens up and dumps water on the earth very quickly in many cases. This is followed by dry periods.
The number of times it rains in a year has increased during the last 50 years due to global warming. What is more, global warming is causing storms to intensify. Storms which would have been ordinary thunderstorms in the past are morphing into raging tempests. Hurricanes have been rated higher in recent years as global warming affects their intensity.
adapted from http://www.globalwarmingtruth.info/
- causes for global warming.
The causes of the recent warming are an active field of research. The scientific consensus is that the increase in atmospheric greenhouse gases due to human activity caused most of the warming observed since the start of the industrial era, and the observed warming cannot be satisfactorily explained by natural causes alone. This attribution is clearest for the most recent 50 years, which is the period when most of the increase in greenhouse gas concentrations took place and for which the most complete measurements exist.
adapted from Wikipedia
- how can you and our government help to reduce global warming.
1 .Use public transportation. Taking the bus, the train, the subway or other forms of public transportation lessens the load on the roads and reduces one's individual greenhouse gas emissions by an average of 1600 pounds per year. Taking public transport removes the stress of long road commutes and gives you a great opportunity to read,think,and relax. You also save on parking money and time wasted looking for parking spaces.
2. Recycle more by using recycling bins, composting, etc. Encourage neighbors, supervisors, colleagues, and businesses to do likewise (15-25% of people don't recycle).
3. Use compact fluorescent bulbs. Replace three frequently used light bulbs with compact fluorescent bulbs and save 300 lbs. of carbon dioxide and US$60 per year. A standard compact fluorescent bulb will save around one third of a tonne of greenhouse gas, along with the cost of six or more incandescent globes.Consider using even more, and give them as gifts to family and friends. Donate a set to a local charity to refit their office with compact fluorescent lights. Remember, CFL bulbs do contain small amounts of toxic mercury. Therefore, proper disposal (recycling) is necessary to prevent any additional landfill contamination.
4. Use recycled paper. Make sure your printer paper is 100% post consumer recycled paper. Save 5 lbs. of carbon dioxide per ream of paper. Decide if something is really worth printing out. Leave a signature at the bottom of your e-mails reminding the reader to think twice before printing the e-mail. Make the most of scrap paper for shopping lists, notes,scrapbooks,phone messages, taking notes in class, etc. Only recycle your paper when it has been thoroughly used up!
5. Buy minimally packaged goods. Less packaging could reduce your garbage significantly, saving 1,200 pounds of carbon dioxide and $1,000 per year. If you consider a certain products' packaging to be excessive, mail it to the company with your challenge to the company to reduce its packaging; include suggestions on how if you have ideas. And while you're at it, feel free to let companies know that if Wal-Mart thinks reduced packaging is not only a good idea but very achievable, then this is likely to set the standard for many businesses in the future.
adapted from http://www.wikihow.com/Take-Action-to-Reduce-Global-Warming
