Cause of global warming

The phenomena. Historically, all of the Earth's climate changes were attributed to natural forces such as volcanic eruptions, Earth's orbital changes, and the amount of released solar energy. That changed with the introduction of the Industrial Revolution late in the 18th century, when human activities began to alter the global climate and environment.

The Industrial Revolution

The onset of the industrial revolution has paved way for the advancement of human technology. As more people relied on technology, numerous tools and devices were invented to make life easier for men. However, the emergence of these inventions has also resulted in the dependence of man to energy. The influx of energy usage from fossil fuels, coal, oil or gas has also resulted in the inception of human-induced rapid climate change. The demand for energy around the world is currently at more than 80% of the world-wide energy demand. Most of this is from fossil fuels such as gas, oil, and coal. Since the energy demand is too high, there hasn't any other alternative source yet with this magnitude which could replace fossil fuels in the short or medium term. Thus the drastic increase in the emission of CO2 (carbon dioxide) within the last 30 years caused by burning fossil fuels has been identified as the major reason for the change of temperature in the atmosphere.

Greenhouse gases and global warming

Greenhouse gases regulate our climate by trapping heat and holding it in a kind of warm-air blanket that surrounds the planet. They are necessary for keeping the Earth's temperature warm enough to support life. This occurrence is scientifically called the "greenhouse effect." The problems related to global warming which we have encountered for decades started when human activities added more greenhouse gases into the atmosphere which disrupt and speeds up the natural process thereby warming the planet to more than the right temperature. Scientists revealed that as the concentrations of these gases continue to increase in the atmosphere, the Earth's temperature will also continue to climb above past levels eventually making the Earth become less habitable for humans, plants and animals. Burning fossil fuels by driving cars, using electricity from coal-fired power plants, or heating our homes with oil or natural gas are just some of the human activities that emit this carbon dioxide into the atmosphere in overwhelming proportion.

Global warming and its consequences

For decades, the rapid pace at which the temperature has risen had already resulted in many negative impacts to humans and the environment and this has created a world-wide concern. Most scientists believe that the warming of the climate will lead to more extreme weather patterns which may accelerate species extinction, influence the length of seasons, results in poor yield of crops, trigger flooding in costal lines, sets off abrupt climate changes and results to more frequent and violent storms.

Causes and Effects of Global Warming
Causes and Effects of Global Warming Causes and Effects of Global Warming
Causes and Effects of Global Warming


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Uploaded: November 30, 1999 at 12:00 am
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Video Comments

AndrewEdwardRoss (November 30, 1999 at 12:00 am)
Ok guys, keep calling me a "propaganaist" asshole :)I'll happily remove your comment and block you :)
belmont162 (November 30, 1999 at 12:00 am)
The greenhouse deniers continue to descend on this comment section like a plague of locusts. It happens with every top video about global warming.Exxon is pouring hundreds of thousands of dollars into obstructing action that would reduce the use of fossil fuels. Part of that campaign is to pay internet lackeys to spread doubt about the overwhelming certainty of the science behind global warming.Be aware of this effort as you see all the denialist SPAM.
jcro7 (November 30, 1999 at 12:00 am)
ya climate change is real,but global warming is not.the Earth has been cooling since 1998 and thats with record levels of carbon in the air.And those sites listed are just propaganda if there is real proof then I will beleive but right now the Earth is cooling get on with your life and go get a tan while u still can
bearfreeman (November 30, 1999 at 12:00 am)
A guy in England found a stone that looked like a head of a fish. On tv, the curator of the museum where the fossilised fish head was going, said "80 million years ago when rampant global warming was happening, the ice caps would have melted and this fish would have been swimming around in a warm tropical sea". No humans making Co2 then was there?Explain why Mars & Pluto etc are also warming? Variable Sun perhaps? Our climate is not static, man made gw is a taxable con.
666Marduk999 (November 30, 1999 at 12:00 am)
Do the world a favor and kill yourself.
sharons813 (November 30, 1999 at 12:00 am)
Fourth Bowl: Men Are Scorched8 Then the fourth angel poured out his bowl on the sun, and power was given to him to scorch men with fire. 9 And men were scorched with great heat, and they blasphemed the name of God who has power over these plagues; and they did not repent and give Him glory.Those that STILL mock are part of the reason!
gop4life109 (November 30, 1999 at 12:00 am)
permafrost*
gop4life109 (November 30, 1999 at 12:00 am)
Yep. Chunks of ice fall off EVERY year due to the spring thaw. Even the perafrost in Russia has been more melted 7 or 8 thousand years ago.
gop4life109 (November 30, 1999 at 12:00 am)
Weather models are useless because there are sooo many factors to be added in that if one out of a hundred is off, the whoole thing is wrong. If it doesn't take in to account solar wind, cosmic rays, and cloud formations, then it is wrong.
xxpinksxx (November 30, 1999 at 12:00 am)
I'm going to let my children worry about global warming 8)
Effects of global warming

Climate Change. Scientific researches have already revealed that the effects of global warming in the 21st century and beyond are expected to be disastrous. Many of these changes are already under way. Recent studies conducted by Working Group II of the United Nations' Intergovernmental Panel on Climate Change (IPCC), states that the increased greenhouse gas concentrations are very likely to increase the Earth's average temperature, influence precipitation, and some storm patterns as well as raise sea levels. In addition to this, the United States National Academy of Sciences has warned that "greenhouse" warming and other human alterations of the earth system may increase the possibility of large, abrupt, and unwelcome regional or global climatic events.

Projected Impacts of Global Warming

A board organized by the U.S National Research Council in June 2006 expressed a "high level of confidence" that Earth as we know it today has experienced the hottest climate for the last 400 years, and possibly even the last 2,000 years. Studies have shown that, for the last century, there has been an increase in the average global surface temperature of roughly 0.3-0.6 degree Celsius (0.5-1 degree Fahrenheit). This global warming will potentially lead to future large-scale and possibly permanent effects at continental as well as global scales. The likelihood, magnitude, and timing is uncertain and contentious but some examples of projected impacts that will occur are more frequent and more intense heat waves, droughts, severe storms, more floods, degraded water quality, and increased spread of infectious diseases. If for the past 100 years such overwhelming effects were observed while the globe warmed up by an estimated average of merely 0.6 degree Celsius (1 degree Fahrenheit), this phenomenon will likely get worse by the year 2100. By that time, temperatures could increase by 6 degree Celsius (11 degree Fahrenheit).

Global Warming and the Society

The effects of global warming will be felt in every region worldwide and at all levels of society. Reports from the United Nations' Intergovernmental Panel on Climate Change (IPCC) confirmed with 90 percent certainty that global warming is now inevitable and humans are primarily accountable for a significant portion of the heat-trapping greenhouse gases that have caused global temperatures to rise significantly since the middle of the 20th century. It also made clear that while poor people worldwide will suffer most from the effects of global warming, no person on Earth will escape its consequences.

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