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Global Environmental Change

Discussion of the distribution and abundance of living organisms and how these properties are affected by interactions between the organisms and their environment

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Problems Affecting Today's Society

Postby anJedc » Tue Oct 20, 2009 10:47 am

As time goes by, the main preoccupation in today's world is science and technology. We live today in a time of challenge. Poverty, population, pollution explosion, the wasteful extraction and use of our country's land and waste resources and the social inequity among are people are the most problem affecting today's society.
Poverty, if we are fighting for it, we must be able to say were poverty is found and how extensive an enemy force poverty really is. We must be able to estimate how of that enemy appears in the form of inadequate food, inadequate clothing, inadequate medicine, irrelevant and insufficient education, wrong values and subhuman housing.
Then, if we fail to conserve water, we will have nothing to drink. If people denude the forests, they will not have trees to enjoy. If the businessmen and middlemen were more cooperative, the high prices would be controlled. If they had known the fish came from polluted pond, they wouldn't eaten it. If all the people supported the family planning program wholeheartedly, then the population would not have increase significantly. This conditional problem has a probable results that may affect us.
Today, as I noticed, we are coming to the stage when a declaration of war against poverty of the body, intellect, and spirit, against inequity in life's gains and opportunities, against the depletion of nature's wealth, against the pollution of our environment, and the controlled rise of population will be compelling, not only because, we owe it to ourselves, but also because we have to fulfill our duty to posterity.
And when our war is declared, will we prefer to fight our individual life's battles, or will we join the collective campaign?
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Environmental Changes and Effects

Postby jhyno » Tue Oct 20, 2009 11:58 am

Environmental Changes and Effects

Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. It can be a change in the average weather or a change in the distribution of weather events around an average (for example, greater or fewer extreme weather events). Climate change may be limited to a specific region, or may occur across the whole Earth.

In recent usage, especially in the context of environmental policy, climate change usually refers to changes in modern climate (see global warming). For information on temperature measurements over various periods, and the data sources available, see temperature record. For attribution of climate change over the past century, see attribution of recent climate change.

Factors that can shape climate are often called climate forcings. These include such processes as variations in solar radiation, deviations in the Earth's orbit, mountain-building and continental drift, and changes in greenhouse gas concentrations. There are a variety of climate change feedbacks that can either amplify or diminish the initial forcing. Some parts of the climate system, such as the oceans and ice caps, respond slowly in reaction to climate forcing because of their large mass. Therefore, the climate system can take centuries or longer to fully respond to new external forcings.

The technology does greatly affect our lives today. Information and Globalization Revolution brought changes not only to human but also to our nature. These changes are inversely proportionate to the environment because as we demand for high technology we also brought unobserved effects to the nature. Our attention is focused on the major economic problems. But we don’t mind that more attention should be given to our environment. We experienced now a simultaneous typhoons and landslides. These climate changes threatened us because for some of it will going to happen much worst effect that it will cause.
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Postby rhinoaprincess » Tue Oct 20, 2009 12:03 pm

that's true
let's all wake up NOW!!!!
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[b]A serious challenge[/b]

Postby rhinoaprincess » Tue Oct 20, 2009 12:05 pm

A serious challenge
Climate change is one of the most serious challenges of this century. It is impacting people, animals, plants and natural environments – from the deepest ocean to the highest mountain.

The current rate of greenhouse gas emissions is likely to cause average world temperatures to rise above 2°C – a change which is expected to irreversibly alter all life on Earth.

Climate change will seriously affect humans, our environment, our health and our security. Rising sea levels, wildfires, floods, droughts and storms will become more common, and up to 30 percent of the planet’s plant and animal species could become extinct.

The world has a wide range of possible solutions that will help combat climate change. Protecting and better managing natural resources is not only one of the most cost-effective, it is the one piece of the puzzle that we cannot afford not to do if we are to make the transition to a sustainable low-carbon world in the coming decades.
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Global Warming and Ocean Environmental Changes

Postby nylecar » Tue Oct 20, 2009 12:18 pm

Global Warming and Ocean Environmental Changes
Climate Change Threat to Coastal Environment and Marine Biodiversity



Rising sea levels and increased ocean acidity, largely driven by global warming, herald looming environmental changes for coastal regions and marine biodiversity.

The effects of global warming are beginning to be felt in the marine environment. Thermal water expansion, caused by higher global air and water temperatures are causing a gradual increase in ocean levels, while melting ice caps threaten a more serious increase. Meanwhile, rising levels of carbon dioxide in the atmosphere are causing the acidity of the ocean to increase with unknown environmental consequences for marine biodiversity.

Environmental Effects of Rising Sea Levels
Whether caused by thermal expansion due to increased temperatures or melting of ice caps, the rising sea levels threaten dire environmental consequences for the entire globe.

Chapter 5 of Climate Change 2007: The Physical Science Basis, by the Intergovernmental Panel on Climate Change and published by Cambridge University Press in 2007 states, “Global mean sea level has been rising. From 1961 to 2003, the average rate of sea level rise was 1.8 ± 0.5 mm yr–1. For the 20th century, the average rate was 1.7 ± 0.5 mm yr–1, consistent with the TAR estimate of 1 to 2 mm yr– 1”.

A report by the U.S. Climate Change Science Program, published in January 2009, titled “Coastal Sensitivity to Sea Level Rise: A Focus on the Mid-Atlantic Region” predicted, “Rising sea level and the potential for stronger storms pose an increasing threat to coastal cities, residential communities, infrastructure, beaches, wetlands, and ecosystems. The potential impacts to the United States extend across the entire country”.

Chapter 4 of Avoiding Dangerous Climate Change, edited by Hans J.Schellnhuber, and published by Cambridge University Press in 2006 states, “The main causes of increased global average sea level during the 21st century are likely to be thermal expansion of the ocean, melting of small glaciers, and the melting of the Greenland and Antarctic ice sheets”.
Increasing Ocean Acidity and the Marine Environment
Rising sea levels is not the only result of climate change. Ocean acidification, caused by increased uptake of carbon dioxide by the oceans is now recognized as having a severe environmental effect on marine biodiversity.

In the article “Ocean Acidification may Increase Calcification Rates”, published in the May 2008 edition of the Proceedings of the Royal Society B, the author, Hannah L. Wood states, “Species with calcium carbonate skeletons, such as mollusks, crustaceans and echinoderms, are particularly susceptible to ocean acidification. As pH decreases, so too does carbonate availability that has led some authors to conclude that ocean acidification will result in reduced rates of calcification and shell dissolution for all calcified organisms”.

An article published by the Antarctic Climate & Ecosystems Cooperative Research Centre in June 2008, titled “CO2 and Climate Change: Ocean Impacts and Adaptation Issues” states, “Other ecological effects of ocean acidification may include interference in the respiration of fish, effects on larval development of marine organisms and changes in the solubility of both nutrients and toxins”.
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‘CHANGE’ The permanent thing in the world

Postby kaye12 » Sat Oct 24, 2009 6:26 am

CHANGE’ The permanent thing in the world
Let us start from the creation of the Earth. Why do God created the world? The answer is just simple, because he wants all His creation to have a place to live and reproduce. Addition to this, God created the human being to take care all of his creation, or simply means that we have the responsibility to all the things we have on Earth.
The world we live in, was a paradise before, you can see clear skies, smell a clean air, good environment, no garbages and you can even gather fresh fruits to eat in the yard. That’s the world before, because there’s no such thing that can harm the world before. As years pass by, the world improved because of the globalization, many inventions were made for the sake of the human being. Others say that globalization or the improvement of technology made our life so comfortable but somehow it also has a bad effect to all of us living here on Earth. Yes, that’s true, maybe were are enjoying the world right now because the modern technology, but we must not forget our resposibility to our environment or the”Mother Earth”.
The tragedies were experiencing right now is just one of the consequences of our neglegence. Try to ask ourselves why we are experiencing this, because of the word “change” as the globalization changes our lifestyle, it also changes our perception about taking care of the environment or simply ‘we always forget our responsibility’.
September 26, 2009 just an ordinary day to each and everyone with an extra ordinary event happened here in the Philippines. The country was hitted by typhoon “Ondoy” which brought a large amount of water that made the majority area of Metro Manila covered by water. Many were killed, many had diseases, many are still missing and worst many will start all over again because their houses were covered with water. There are no rich and poor when our environment teach us our lesson, we are all in the same shoes.
“Change” is always there and we can’t help it, but as the one responsible on Earth, we must not forget that God give us the authorithy to take in-charge of all the things He created. We must all do our part. No to pollution, because it can kill us all.
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Re: Global Environmental Change

Postby kaye12 » Sat Oct 24, 2009 6:44 am

let's all try to be responsible
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Postby liups646750585 » Tue Feb 09, 2010 2:26 am

nice :D
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Postby mcar » Wed Feb 10, 2010 7:15 am

Seems that most of us are now becoming aware of this changing world, both local and abroad.
---Just one act of random kindness at a time and you can change the world---
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Postby biohazard » Wed Feb 10, 2010 9:33 am

The world has been changing ever since it formed. There have been way bigger events than what's going on at the moment, and bigger ones will surely follow.

That being said, I am fully aware that us humans are changing the world more than we have ever done. I'm excited to see what the outcome is! :)
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Postby mcar » Thu Feb 11, 2010 6:40 am

Somehow, here I am again, entertaining some Biblical prophecies in my mind such as massive changes will take place: natural destruction (take note of the recent earthquakes and flash floods), wars and conflicts between nations... etc. and these things tell that the end of times is near. What about that? anyway I don't mean to open non-science idea here. It just popped out okay ;-) after all, we individually work for our own salvation.

Anyway, going back to the connected topics here, this planet is totally exploited to the max. There's nothing new anymore and let's just wait for the other outcomes.
---Just one act of random kindness at a time and you can change the world---
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Postby biohazard » Thu Feb 11, 2010 7:37 am

We've always got flash floods, tsunamis, eartquakes, wars, disease and all that fun stuff our beloved God decided to give us. There hasn't been any natural disaster recently that hasn't happened dozens of times before. Through the human history God has loved us with all kinds of natural disasters causing mass death, so we should have got used to it by now. And I think he is going to continue having fun with us for years to come. Ever played the computer game named Populous? Well, I can see many similarities in the game's gods and our God...

If you just think about God's love (hey, he just wasted some 200 000 Haitians, what a jolly bloke!), I am sure as hell afraid to go to heaven, because if he expresses his "love" in a similar way he does here on earth, my friend, we are fucked.
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