what will happend if nothing is done to stop global warmings?

Answer 1

Mass extinction perhaps wiping out the humans. Life, in general, will continue to evolve and adapt to the new climate on earth but that life may not include us.

Answer 2

It all depends on who you ask.
Some believe that the so called global warming is a natural process the earth goes through every few hundreds of tho sands of years. Basically Moves from warming to freezing ... heat wave to ice age.
Some others state that we humans are causing the warming with increased green house gasses pollution etc. Its hard to get a handle on the truth because all you see on TV and in The media is the total extremes. For example pollution during the 18th 19th century in the UK was far worse than now... hence the Pea souper smogs. However there is little record of how or if it affected the climate.
So in reality ... If the world is warming and going through its natural cycle then as mentioned by some one earlier the next phase will be an Ice age. ( which theorists in the 1970's said we were heading towards ...funny how times change.) It may be that effects of humans will speed up the process. and that warming will come sooner. Basically nobody really knows ... but yes the earth is warming.. but truthfully cause unknown

Answer 3

Nobody knows for sure, that's what makes responding such a problem. Anyone who tells you it isn't real or is a natural process doesn't know what they're talking about - there is overwhelming scientific evidence from decades of research that the warming we are seeing at the moment is mostly unnatural (check out http://www.metoffice.gov.uk/education/links.html#warming for some good information).
As temperatures continue to rise (this has already started and may accelerate if positive feedback loops like methane hydrate dissociation and albedo effects come into play) then more ice will melt and sea level will rise too. This will lead to increased flooding and the infiltration of saltwater into aquifers (threatening water supplies). In 1998 the UK spent £200m on coastal defences, but in 2005 we spent over £500m (according to Sir David King).
As hurricanes and tropical storms form easier and stronger in warm waters, their incidence will probably rise.
Tropical diseases like malaria will spread to higher latitudes.
Biodiversity will suffer as habitats change and disappear (e.g. the polar bear may have no Arctic ice to roam by 2040).
Droughts and forest fires will increase, which will damage agriculture - this is already happening in Australia.
With a warmer atmosphere you get less oxygen dissolved in the oceans and global circulation decreases in strength (in the atmosphere and oceans). It's been suggested this might shut down the Gulf Stream (which would reduce the UK temperature by about 4C), but recent Hadely Centre models show this probably won't happen.
On the plus side we will have fewer winter deaths and more English wine, but that hardly outweighs the cons. Obviously this is only the tip of the [melting] iceberg, but unless we get our act together pretty fast the future is looking very bleak indeed, and even if we do sort it out, we're already commited to another 30 years of warming from our emissions so far!

Answer 4

The Greenland ice shaft and the ice shaft in west antartica will melt, causing global sea levels to rise 4 meters. Coastal areas will be flooded. Lowlying areas such as deltas are most vulnerable. The permafrost of the himalayas will disappear, thus ending rivers like the ganges which feed 40% of the world's population. The permafrost over Siberia will lift, enable Russia greater access to the fossil fuels underneath it. Tropical storms will be stronger and more common. Storms of the century used to occur every 100 years but are now quite commonplace. The storms in the future will dwarf even these storms. The melting of the Greenland ice shaft threaten to disrupt the gulf stream that brings warmth and sea-borne nutrients to areas in the north atlantic like England and New York. This will result in an ironic cooling of those regions in the age of global warming. This disruption of the gulf stream also threatens cold water fish stocks like salmon. Wind patterns will also change due to the increase in moisture and energy in the atmosphere. Deserts may shift, expand and even turn into lush tropical forests. Likewise, forests and other rain fed areas can turn into deserts as the prevailing winds change.

Politcally, global tensions will rise as traditional powers are affected by the disruption of the gulf stream. Border skirmishes are likely to break out in central asia over water.

Answer 5

Pretty much nothing. Eventually we'll get back to another ice age.

Answer 6

An engineer's first task is to determine the true cause of an addressed problem.

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What would you do to change either of those?