Why is global warming bad?

Question

Why is global warming bad?

Answer 1

cuz it will end up melting the artic the cold water will shift the currents in the sea we will have crazy massive whether changes that will adventruly destroy the earth

Answer 2

This is a list of stuff caused by global warming

Answer 3

ha ha ha ha ha ha

fools you believe only the media government and never science!!

lets take a look at bse mad cow disease!; ok an assumption that over 200,000 people would die from a brain disease contracted from cows around 100 contracted the case!

take bird flu; were going to die from a disease from birds, no one has died exept 3 - 4 people living in a chicken shed in asia!

global warming is natural, man mad however is a dramatized propaganda problem by the government and media

it started when Margaret thatcher was in power she wanted to promote nuclear fuel as its the cleanest most efficient way yet she had this topic looked into to create a bandwagon

and once a bandwagon is created it never stops!

man made global warming theory has been around for over 30 years and all the save the earth lark gypsy tribes have gotten onto this theory and wont stop "a washing machine keeps the world hot"- what a load of nonsense!

the earth has been alot hotter and alot cooler in the 1800's it was a mini ice age and in the 1500 it was the medieval warm period. hotter and colder than today! mind we dont measure the problem in degrees its something like 0.0 of degrees as the temperature change is sooo small. like wise if the media says something it has authority so people believe it, you believe what you want

pollution is a problem but we we will all die any way from something!

i think the truth

needs a best answer

Answer 4

In the far past during periods of far greater warmth than we are experiencing today life was much more prolific than it is now.

Do we know what the optimum temperature for life on this planet is ?

If we can't answer this question then how could we call warming bad ?

It could be beneficial to life, let's just say that today the temperature is different than yesterday.

Answer 5

It's overheating the Earth and killing it's atmosphere. The level of the oceans is rising, the air is being polluted, and animals that live in the polar regions are dying.

Found on http://en.wikipedia.org/wiki/Effects_of_...

Increasing temperature is likely to lead to increasing precipitation but the effects on storms are less clear. Extratropical storms partly depend on the temperature gradient, which is predicted to weaken in the northern hemisphere as the polar region warms more than the rest of the hemisphere.

Extreme Weather (and to me, the most important effect)



This image shows the conclusions of Knutson and Tuleya (2004) that maximum intensity reached by tropical storms is likely to undergo an increase, with a significant increase in the number of highly destructive category 5 storms.Storm strength leading to extreme weather is increasing, such as the power dissipation index of hurricane intensity.Kerry Emanuel writes that hurricane power dissipation is highly correlated with temperature, reflecting global warming. Hurricane modeling has produced similar results, finding that hurricanes, simulated under warmer, high-CO2 conditions, are more intense; there is less confidence in projections of a global decrease in numbers of hurricanes. Worldwide, the proportion of hurricanes reaching categories 4 or 5 – with wind speeds above 56 metres per second – has risen from 20% in the 1970s to 35% in the 1990s.Precipitation hitting the US from hurricanes increased by 7% over the twentieth century.The extent to which this is due to global warming as opposed to the Atlantic Multidecadal Oscillation is unclear. Some studies have found that the increase in sea surface temperature may be offset by an increase in wind shear, leading to little or no change in hurricane activity.

Increases in catastrophes resulting from extreme weather are mainly caused by increasing population densities, and anticipated future increases are similarly dominated by societal change rather than climate change. The World Meteorological Organization and the U.S. Environmental Protection Agency have linked increasing extreme weather events to global warming, as have Hoyos et al. writing that the increasing number of category 4 and 5 hurricanes is directly linked to increasing temperatures. Thomas Knutson and Robert E. Tuleya of NOAA stated in 2004 that warming induced by greenhouse gas may lead to increasing occurrence of highly destructive category-5 storms. Vecchi and Soden find that wind shear, the increase of which acts to inhibit tropical cyclones, also changes in model-projections of global warming. There are projected increases of wind shear in the tropical Atlantic and East Pacific associated with the deceleration of the Walker circulation, as well as decreases of wind shear in the western and central Pacific.[19] The study does not make claims about the net effect on Atlantic and East Pacific hurricanes of the warming and moistening atmospheres, and the model-projected increases in Atlantic wind shear.

A substantially higher risk of extreme weather does not necessarily mean a noticeably greater risk of slightly-above-average weather. However, the evidence is clear that severe weather and moderate rainfall are also increasing. Increases in temperature are expected to produce more intense convection over land and a higher frequency of the most severe storms.

Stephen Mwakifwamba, national co-ordinator of the Centre for Energy, Environment, Science and Technology - which prepared the Tanzanian government's climate change report to the UN - says that change is happening in Tanzania right now. "In the past, we had a drought about every 10 years", he says. "Now we just don't know when they will come. They are more frequent, but then so are floods. The climate is far less predictable. We might have floods in May or droughts every three years. Upland areas, which were never affected by mosquitoes, now are. Water levels are decreasing every day. The rains come at the wrong time for farmers and it is leading to many problems"

Greg Holland, director of the Mesoscale and Microscale Meteorology Division at the National Center for Atmospheric Research in Boulder, Colorado, said on April 24, 2006, "The hurricanes we are seeing are indeed a direct result of climate change," and that the wind and warmer water conditions that fuel storms when they form in the Caribbean are, "increasingly due to greenhouse gases. There seems to be no other conclusion you can logically draw." Holland said, "The large bulk of the scientific community say what we are seeing now is linked directly to greenhouse gases."

Other effects include increased evaporation, glacier shrinkage and dissapearance, sea level rise, and temperature rise.

If you would like to read more on the effects of global warming, go to http://en.wikipedia.org/wiki/Effects_of_...

Answer 6

All pollution is bad it kills people and our home-earth. We must demand a pollution surcharge and consumption tax. This is a grass roots movement, check out coolingearth.org

Answer 7

All these statements about how it will be nice to have a warmer planet are pure hogwash.

Here is why.

"I don't know if there is a meaningful way to define an "optimum" average temperature for planet earth. Surely it is better now for all of us than it was 20,000 years ago when so much land was trapped beneath ice sheets. Perhaps any point between the recent climate and the extreme one we may be heading for, with tropical forests inside the arctic circle, is as good as any other. Maybe it's even better with no ice caps anywhere."

"It doesn't matter. The critical issue is not what the temperature is, or may be, or will be. The critical issue is how fast it is moving."

"Rapid change is the real danger. Human habits and infrastructure are suited to particular weather patterns and sea levels, as are ecosystems and animal behaviors. The rate at which global temperature is rising today is likely unique in the history of our species."

"This kind of sudden change is rare even in geological history, though perhaps not unprecedented. So the planet may have been through similar things before -- that sounds reassuring, right?"

"Not so much. Once you look at the impact similar changes had on biodiversity at the time, the existence of historical precedent becomes anything but reassuring. Rapid climate change is the prime suspect in most mass extinction events, including the Great Dying some 250 million years ago, in which 90% of all life went extinct."

"What we know about ecosystems, and what geologic history demonstrates, is that dramatic climate changes -- up or down or sideways -- are a tremendous shock to the biosphere and cause mass extinction events. That, all in all, is not likely to be a good thing."

http://gristmill.grist.org/story/2007/1/...

We  hear these arguments all the time here.  Well the earth has warmed before, so what's the problem?   The problem is that warming, that in the past may have taken tens if not hundreds of thousands of years, is happening in a few hundred years,  in the blink of an eye.

"As global temperature climbs to 3°C above present levels - which is likely to happen before the end of this century if greenhouse emissions continue unabated - the consequences will become increasingly severe. More than a third of species face extinction. Agricultural yields will start to fall in many parts of the world. Millions of people will be at risk from coastal flooding. Heatwaves, droughts, floods and wildfires will take an ever greater toll."

"There are two factors should borne in mind when thinking about the impacts. Firstly, even countries that escape the worst of the direct effects will feel the economic effects of what happens elsewhere. There may be social and political problems too, as migration increases and water becomes increasingly scarce in some regions."

"Secondly, there are time lags between rises in CO2 and their impact on climate. These lags mean that the longer we delay effective action, the more severe the impacts will eventually be."

"There is a lag between CO2 rises and their full effect on global temperature. Even if we made the drastic cuts necessary to stabilise CO2levels tomorrow, the world would continue to warm for decades."

"There is an even longer lag between any increase in temperature and the resulting rise in sea level. The IPCC is predicting a rise of 0.6 metres at most by 2100 but this will just be the start."

"The IPCC predicts a minimum temperature rise by 2100 of 1.8°C. About 120,000 years ago, when it was 1 to 2°C warmer, the sea level was 5 to 8 metres higher - more than enough to inundate many major cities around the world, including New York, London and Sydney. Three million years ago, when the temperature was 2 to 3°C higher, it was 25 metres higher."

"There is no doubt that similar temperature increases will eventually lead to similar rises in sea level. The assumption is that it will take many centuries, as the Greenland and Antarctica ice caps slowly melt and the oceans expand as the waters warm. But some researchers think it could happen much sooner due to the sudden collapse of ice sheets."

http://environment.newscientist.com/chan...

Answer 8

It's not because it doesn't exist. Write this down: AL Gore is a lier. I can't say that enough. All this "global warming" is propaganda.

Answer 9

Global Warming is bad because it is the cause for the depletion of ozone layer which protects us from ultraviolet rays. as a result we suffer from many diseases like skin cancer.

Answer 10

Global warming, if it were limited to the level previously felt on earth might be benign enough,

If it is out of that range, significantly warmer, we cannot say that it would be as benign. that is we have no example for this outcome.

But global warming will heat up the oceans enough to produce an ice age. Yes, it takes a lot of ocean warming to produce a major ice age.

Eventually, we will have that warming that leads to an ice age. We do not know how to avoid that sequence. So what would be useful if we could pull it off, is to avoid speeding up that warming that leads to an ice age.

It is not by any means certain that we can learn how to avoid going into the ice age.  But it would be best to delay it a few hundred, maybe thousand years if we can.

We may be able to survive the warm end of the cycle, but we may not. A lot of us will not mke it through the following ice age.

And none of us will get out of life alive.

Answer 11

It's bad because growing seasons will be increased, farm land will increase, and life expectancy will increase.

More people die during "cold" years than "warm" years.  None of the calamities that have been predicted have occurred.  The alarmists can't even get hurricanes straight.  I guess it just depends on which year you are inquiring about.  Some years AGW causes more hurricanes, some years it doesn't.

Global warming really is bad though because Algore will continue to line his pockets with carbon offset money as long as the scare continues.