We all heard about global warming when do you think will we b able to see the effect.?
346931
We are already seeing the effects. Read Bright Dawn, dark future  it was published in the early 90s but predict several events that have happened since do to GLOBAL WARMING!!!
967930
The earth has historically gone through cyclical climate changes and we my or my not be going through one now. As to what is causing this, we can only speculate. I don't think that all of the SUVs or hair spray in the world is going to change our climate.
544753
it's really interesting.. the 12% answer is correct as a close approximation.\nThe interesting thing to note is that we are supposed to be causing globabl warming. This figure puts makind really into a good global perspective.\nThe next thing to do is see how much smoke and gas volcanos and thermal springs pump into the world every year. \nThen add in all the gases caused by animal excrement (include human in the numbers), and all the plantlife on the planet (including photosynthesising plants and animals in the oceans) and you start to build a very good picture that mankind is not causing global warmnig.
710885
with the global warming increased\nmore green cars and powerstations will be inverted
338217
Finally someone has come to their senses.  The problem with "global warming" is that you can't prove or test anything!  Its all in theory.   Check some of these sites and read the Crichton novel "State of Fear".
551161
Yeah it's getting very clear it's happening. Now we're going to have to find ways to be more efficient. It won't devour the earth, but it can potentially raise heat and suck in a few cities under water.
457897
No.  If the planet were on a cooling trend, and stayed that way for a while, it might be heading towards a periodic Ice Age, as it has done in the past.  We would consume a lot more of outr limited energy resources just to keep ourselves warm.  Also, don't worry so much about Global Warming.  As I said before, nature goes through these cycles of warming and cooling.  Yes. humans have an impact, but it is small.
100431
global warming  im not kidding
537292
No and yes. \n\nWith regards to un-educated and mis-informed rubbish that goverments tell us that global warming is an artifact of human activity on this planet no I do not. Global warming is a topic which for the last thirty years or so has been 'fashionable' to study. If you look it at this way, the Earth is approx 4 to 6 billions years old and we are only studying the past few centuries. To me this is not even a dot on the Earths timescale so how can we possibly deduce mans influence on the climate. The climate of the earth is changing constantly. What we recognise as the four seasons; sping, summer, autumn (fall) and winter have only been in existance for the past few million years!\n\nAlthough some scientists have looked at the recent erosion of the ozone, they fail to see the bigger picture and take into account the varying orbit the planet has around the sun, its tilt and wobble (see link below for info on the Milankovitch Theory). They also fail to recognise in they're studies the gravitational pull of the earths core and the movement of the fluids contained within. Additionally the 'hotspots' or 'solar flares' on the sun are not taken into account when global warming is discussed, of which also effects our climate.
857599
I guess I'm one of those people who notices changes in my own state - winters are NOT the same - but I am aware that our planet has undergone changes in the past. Are humans having an effect? I'm sure of it. But how much? And how much of the changes we're seeing are completely natural in the grand scheme of things? I'm not prepared to answer.
617090
Global warming is definately a huge issue.  I don't think any countries are enacting on this issue currently
1173864
No. There are plenty of other theories. The EPA can't and hasn't proven any of their theories. Even a Harvard scientist said that we may just be recovering from a mini Ice Age that caused famine for 400 years (Ireland's potato famine). Who am I supposed to believe? I am not scared, although I do believe it is a good time to start reducing greenhouse gas emissions. Who knows what the cause of "global warming" is? Oh well. Let's just reduce greenhouse gas emissions. There's nothing harmful in that.
62833
We will be entering the Age of Aquarius, as refered to in the song. This is determined by what constellation corresponds with where the sun rises on the vernal equinox. (We are currently in the Age of Pisces) Who knew that rock musicians were so aware of astronomy?\n\nPrecession changes the time of year when the earth reaches it's perihelion which is the point where the earth is closest to the sun during its orbit around the sun. Presently we reach perihelion on about Jan. 3, which is during northern hemisphere winter. This has an effect on climate and is likely to be increasing the solar warming during winter while reducing it for summer in the northern hemisphere. Eleven thousand years ago the reverse was true. There is no doubt we are in a long term climate cycle that we are just beginning to understand. \n\nI doubt that the effect will be any more remarkable than in any other year. The cycle is so long (~22,000 years) that the rate of change is likely to insignificant. The one factor that is still not well understood is how these changes may create feedback systems in our climate that may not show up until many years after the changes. We will be moving the perihelion in the direction of having it during  the northern fall season, and since it has been about 20,000 years since the earth has had that position we don't have much of an idea how that will affect climate dynamics between the northern and southern hemisphere or if we will continue to see effects that may be delayed reactions to the change of precession over the last 5,500 years.\n\nCheck out the diagram at NOAA:                  Good question!!
1016844
Mission Impossible:  HONESTY AND TRUE REPRESENTATION PLEASE.  As far as issues goes, lets see if the pres. can have the balls to say YES there really is GLOBAL WARMING!!  Not necessarily do anything about it but at least acknowledge it does exist would be nice.
282103
Is the book you read "State of Fear"?\n\nYou can debate this all you want, but you wont get anywhere until you define 'global warming.'  I think I wrote a long-winded explanation in another answer, so search for that.\n\nThe long and the short of it is:\n\n1.  The Earth goes through natural warming and cooling, based on a HUGE range of varying natural processes, from changes in orbital paramaters to changes in sea ice thickness in polar regions.  It has done this since there were oceans and an atmosphere, and will always continue.\n\n2.  Humans have influenced certain properties of the atmosphere and hydrosphere that may be contributing to accelerated warming (ozone depletion, increased levels of 'greenhouse' gases, etc).  Since we dont know if the Earth would be warming anyway, we cant definitively say that a current warming trend is related to human influence (but its a good bet).\n\n3.  Global warming trends are difficult to understand.  As a paleoclimatologist, I dont even understand it.  I dont know where the temperature data has been collected, the spatial distribution of the data points, I dont know what the temperatures are being compared to (the Earth has been much warmer at times in the past), I dont know if the scientists who tabulate the data are being influenced by something other than true science, etc.\n\nBottom line is that its a VERY VERY complex problem.  Unfortunately, the more data that are generated, the more complex and vague the answer will become, and the more people will become divided over the interpretation of the data.\n\nIt would be wise to minimize our impact on the climate system (or any Earth system for that matter) as best we can, no matter what the answer is.  The more interesting question is: when will the next 'ice age' begin, if it hasnt already?!?!?
226332
It is happening... look at all the data. However, I think that "greenhouse gases" are a little overplayed as the scape goat... we ARE coming out of an ice age, after all.
315973
Actually we are going for Global Warming, where all teh Ice is going to melt and probably flood alot of places, the atmosphere is gettinng thinner and more ultra violates are entering earth. P.S. did you see any Acorns? Keep looking for it...