wat will be the cause of global warming dats happening now,,,,i wan a clear answer.....?

Answer 1

CO2 is 30% higher than it has been for 650,000 years. Methane is 130% greater. These are two of the main pollutants humans put into the atmosphere in excess, and they are two of the primary greenhouse gases.

Look at the 'hockeystick', which shows a dramatic warming since 1950 after a fairly stable climate for 1000 years. In fact, the 10 hottest years in recorded history have all happened since 1990, with 2005 being the hottest.
(see links below)

How's that for proof of man's fault in this? There is ample proof, any real scientist will tell you that.

There has NEVER been an article doubting man's influence on global warming published in a peer-reviewed journal. A recent study of almost 1000 proved that.

Yes, the earth naturally heats and cools, but the rate and amount we are warming now is unprecedented in the recent geologic past. We are doing this, and we must stop it. This is not some political statement or rhetoric. This is science trying to educate a crass, ignorant public of the damage they are doing. The magnitude of temperature increase ALREADY is about 10x that of the 'little ice age' of the middle ages, and rate and amount are only going up.

Just to be clear, glacial and interglacial cycles are mainly controlled by astronomical fluctuations, but we have a detailed record of the last 7 cycles, and what the climate and CO2 is doing now is way different and extreme. The rate of increase is much higher than in the past AND the value itself is much higher.

HI CO2:
http://news.bbc.co.uk/1/hi/sci/tech/4467420.stm
HOCKEY STICK:
http://news.bbc.co.uk/1/hi/sci/tech/5109188.stm
General climate stuff:
http://news.bbc.co.uk/1/hi/sci/tech/3897061.stm

Answer 2

Gene always seems to have a good answer. Zol might have a point but doesn't seem to realize the most important greenhouse gas, water vapor. The sun has increased its output. Recently, it was found that solar winds or cosmic rays cause water droplets to form. This is a potential mechanism for a little increase solar output with increased sun spots to greatly increase warming (not that great but enough to account for recent warming). This is because water vapor is a far more important greenhouse gas than CO2. The dirty little secret about CO2 is that it is insignificant enough to be extremely doubtful if it could result in any of the recent warming. The models which everyone should take with a grain of salt usually have temperatures increase by about a degree which I certainly wouldn't notice. Human caused global warming is a farce and a fantasy.

Answer 3

No one really knows for sure. Some people like to blame us. The only fact that seems sound is that the sun's output has gone up .2% in the last 40 years and Mars and Pluto are also heating up. Read here --

http://www.space.com/scienceastronomy/sun_output_030320.html

Answer 4

Solar activity is the prime driver. If you want to see a really interesting video that discusses the situation check this one out. It will give you a lot to think about.

http://video.google.com/videoplay?docid=4499562022478442170

Answer 5

then give a clear question!!!

but i think i know the answer. greenhouse gases (Carbon dioxide and methane) build up in our atmosphere and create a layer of gas. sun rays can penetrate this once but when they reflect off the earth's surface, instead of returning to space, this layer of gas traps them heating up the earth.

the sun\
light ray\
-----------\--------------------------
------------\-------------------------
gas layer\.../\../\
________\/_\/_\___________the earth

Answer 6

You talk funny..!