what is global warming?

Answer 1

Global warming goes hand in hand with the green house gas effect. The amount of gas in the atmosphere is increasing and has no way of excaping throught the ozone layers, they are reflecting back downward to earth. As we continue to create emissions the rate is increased.

Answer 2

Everybody has already heard something about global warming, but honestly: Are we doing enough? No, we’re not. We CAN, we SHOULD and we MUST do much more, because if we don’t we and our future generations are going to suffer the consequences.
We live in a planet that is really fragile, and we cannot expect that it will stay all right after being damaged on daily basis by us. One of the main processes that causes global warming is the greenhouse effect. (show PowerPoint – here is an image explaining the greenhouse effect), as we can see here, the solar radiation pass through the atmosphere, some of it goes back to space, but others stay on Earth (which is good because it keeps our planet warm), but with the global warming happening the ones that are suppose to go back to the Space can’t go, instead they stay in our planet, causing hotter temperatures than normal).
If we put a glass of ice outside in a hot day, of course that it will eventually melt, and the ice turns into water. That is exactly what is happening with our glaciers…Since some glaciers are melting the sea level rising is becoming a real threat. We are facing a big danger: if the West Antarctic ice shelf melts the sea level would raise 20 feet (6 meters), putting in danger places like New York, Florida, San Francisco Bay, the Netherlands and many more. (Show PowerPoint: this is what will happen to the World Trade Center Memorial, in Manhattan. And in Florida, where 15 million people live. And here there is Netherlands, where 16 million people live). If this happens “the maps of the world will have to be redrawn”.
But we are not just facing the rise of sea levels. Many other things CAN and WILL happen to our beautiful planet, such as more hurricanes, droughts, floods, infectious diseases, a possibility of a new ice age, many deaths and of course the rise in temperatures (show PowerPoint: this is how our planet is right now, but if the global warming keeps happening it will turn into this, a completely different image).
If you want to take action there are a lot of things that you can do, for example, don’t leave electronics, (such as computers, televisions, etc.) in standby mode (because even if they are in standby mode they are using energy, when you don’t actually need it); recycle (if you recycle you can save 2400 pounds of carbon dioxide a year, which is a big help for our environment); switch to green energy (green energy is the type of energy that is not going to damage the environment, this energy is made by natural processes, like solar power, wave power and wind power. One of the examples of the green energy things that you can buy are fluorescent lights); don’t use your car so many times (while you are using a car you’re burning fossil fuels, which are extremely dangerous for our environment); try not go by plane (airplanes are responsible for 2 to 3 percent of human CO2 emissions, because they trap energy in Earth's atmosphere); use less hot water (because it takes a lot of energy to heat water); plant more trees (one tree will absorb a ton of carbon dioxin over its lifetime) and spread the word (if a lot of people know about this world crisis it will be much easier to take action, because we will have everybody’s help).
A man called Upton Sinclair wrote: “It is difficult to get a man to understand something when his salary depends upon his not understanding it”. This is why the politicians don’t do anything about it; but what do you prefer: Money or our planet Earth? It is not hard to choose, because without our planet we cannot have money. Why are we still ignoring this when we have so much proof that this is real? For example: the Lake Chad: in 1963 it was a beautiful big lake in Africa, but now it doesn’t exist. The Ward Hunt ice shelf in Canada has broken apart. 2005 was the hottest year ever and the hurricanes have become bigger and more: some examples are the hurricane Katrina (in New Orleans, Louisiana) and the hurricane Rita (in Los Angeles, California). We cannot say: “I am only one person, I am not going to change the world by doing this” If you say this, or think this way you are doing the wrong thing, because if we all help, a personal level will turn into a national level and then a global level. We know what to do, how to do it and we have everything that we need. If we are enough smart to create things like computers we are enough smart to solve this, we are only missing will.
We can do two things about the global warming: spending all day long not caring about the problem, while millions of innocents die, and putting yourself in risk or do something about it and change our world. It is your decision…

Answer 3

It is a lot of hot air released into the atmosphere from global warm-mongers.

Answer 4

Explained in simple terms here...

http://profend.com/global-warming/pages/questions.html#1

Answer 5

It's just unusually warm temperatures around the globe due to different things... Like green house gas emissions are making the sun's rays more powerful.

Answer 6

A bad Joke

Answer 7

it is a scam, carbon credits what a joke, what ever happened to arbor day, lets all just plant a tree, and why is the south pole getting colder,

Answer 8

Global warming is the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation.

Global average air temperature near the Earth's surface rose 0.74 ± 0.18 °C (1.3 ± 0.32 °F) during the past century. The Intergovernmental Panel on Climate Change (IPCC) concludes, "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations,"[1] which leads to warming of the surface and lower atmosphere by increasing the greenhouse effect. Natural phenomena such as solar variation combined with volcanoes have probably had a small warming effect from pre-industrial times to 1950, but a cooling effect since 1950.[1] The basic conclusions have been endorsed by at least 30 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries. The American Association of Petroleum Geologists is the only scientific society that rejects these conclusions,[2][3] and a few individual scientists also disagree with parts of them.[4]

Climate models referenced by the IPCC project that global surface temperatures are likely to increase by 1.1 to 6.4 °C (2.0 to 11.5 °F) between 1990 and 2100.[1] The range of values reflects the use of differing scenarios of future greenhouse gas emissions and results of models with differences in climate sensitivity. Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a millennium even if greenhouse gas levels are stabilized.[1] This reflects the large heat capacity of the oceans.

An increase in global temperatures can in turn cause other changes, including sea level rise, and changes in the amount and pattern of precipitation. There may also be changes in the frequency and intensity of extreme weather events, though it is difficult to connect specific events to global warming. Other effects may include changes in agricultural yields, glacier retreat, reduced summer streamflows, species extinctions and increases in the ranges of disease vectors.

Remaining scientific uncertainties include the exact degree of climate change expected in the future, and how changes will vary from region to region around the globe. There is ongoing political and public debate regarding what, if any, action should be taken to reduce or reverse future warming or to adapt to its expected consequences. Most national governments have signed and ratified the Kyoto Protocol aimed at combating greenhouse gas emissions.
Terminology
The term "global warming" is a specific example of the broader term climate change, which can also refer to global cooling. In common usage the term refers to recent warming and implies a human influence.[5] The United Nations Framework Convention on Climate Change (UNFCCC) uses the term "climate change" for human-caused change, and "climate variability" for other changes.[6] The term "anthropogenic climate change" is sometimes used when focusing on human-induced changes
The climate system varies through natural, internal processes and in response to variations in external forcing factors including solar activity, volcanic emissions, variations in the earth's orbit (orbital forcing) and greenhouse gases. The detailed causes of the recent warming remain an active field of research, but the scientific consensus[7] identifies increased levels of greenhouse gases due to human activity as the main influence. This attribution is clearest for the most recent 50 years, for which the most detailed data are available. Contrasting with the scientific consensus, other hypotheses have been proposed to explain some of the observed increase in global temperatures, including: the warming is within the range of natural variation; the warming is a consequence of coming out of a prior cool period, namely the Little Ice Age; or the warming is primarily a result of variances in solar radiation.[8]

None of the effects of forcing are instantaneous. Due to the thermal inertia of the Earth's oceans and slow responses of other indirect effects, the Earth's current climate is not in equilibrium with the forcing imposed. Climate commitment studies indicate that even if greenhouse gases were stabilized at present day levels, a further warming of about 0.5 °C (0.9 °F) would still occur.[9]

Global temperatures on both land and sea have increased by 0.75 °C (1.4 °F) relative to the period 1860–1900, according to the instrumental temperature record. This measured temperature increase is not significantly affected by the urban heat island. Since 1979, land temperatures have increased about twice as fast as ocean temperatures (0.25 °C per decade against 0.13 °C per decade).[23] Temperatures in the lower troposphere have increased between 0.12 and 0.22 °C (0.22 and 0.4 °F) per decade since 1979, according to satellite temperature measurements. Temperature is believed to have been relatively stable over the one or two thousand years before 1850, with possibly regional fluctuations such as the Medieval Warm Period or the Little Ice Age.

Based on estimates by NASA's Goddard Institute for Space Studies, 2005 was the warmest year since reliable, widespread instrumental measurements became available in the late 1800s, exceeding the previous record set in 1998 by a few hundredths of a degree.[24] Estimates prepared by the World Meteorological Organization and the Climatic Research Unit concluded that 2005 was the second warmest year, behind 1998.[25][26]

Anthropogenic emissions of other pollutants—notably sulfate aerosols—can exert a cooling effect by increasing the reflection of incoming sunlight. This partially accounts for the cooling seen in the temperature record in the middle of the twentieth century,[27] though the cooling may also be due in part to natural variability.

Paleoclimatologist William Ruddiman has argued that human influence on the global climate began around 8,000 years ago with the start of forest clearing to provide land for agriculture and 5,000 years ago with the start of Asian rice irrigation.[28] Ruddiman's interpretation of the historical record, with respect to the methane data, has been disputed.... THERE IS A LOT MORE TO SAY.....

Answer 9

it doesn't exist it was made up by al -qaeda the terrorist sons o bitches to scare us

Answer 10

This video will explain it all

http://www.youtube.com/watch?v=ZZjYkMxtl38&watch_response