Process and explanations

well this will be the symbol that I going to draw using adobe illustrator CS 3.
Below are the process of the making of the symbol..

First, I drew a circle by using Ellipse tool and used pen tool to drew the outline of half shape of the eye

Then, I chose the charcoal brush type to the outline of the symbol as I don't want it look too formal

I copied the outline of half shape of the eye i drew using pen tool and pasted and flipped horizontally and flipped vertically by selecting the two pasted copied lines and right click the lines and clicked "Transform" and click "refletion"

then I used scissors tool to cut the lines shorter

After that, I used scissors tool again to cut some part of the circle.

I also changed the line of the circle into charcoal brush line.

I made the two guidelines to mark the center of the symbol and drew a circle there.

I turned the lines into oval brush type and used pen tool again and drew few more lines

I used paint bucket to paint black as same as the symbol I design on rough paper, then I make a new later and copy the same outlines and paste on the new layer

I named the first layer as "background" and the second layer named " Outline" layer. Then I changed the outline of the first layer into white colour and copied the lines spiralling/rotating into the black circle and changed brush type in "watercolour stroke 5" to have the effects that look like hurricane.

then I drew 5 chimney and used gradient tool to paint it

edited and adjusted/do the final touch...

Done

My symbol of global warming is to warn us, people to be aware the effect of harmful gases produced by us through factories which built by us, that will cause the temperature increasing and lead to increasing precipitation. Kerry Emanuel writes that hurricane power dissipation is highly correlated with temperature, reflecting global warming.However, a further study by Emanuel using current model output has concluded that the increase in power dissipation in recent decades cannot be completely attributed to global warming. (link)

As you can see, the symbol have the shape of an eye and also is a hurricane symbol rotating. What I trying to tell from this is, the effects of global warming is causing the earth getting worse and its happening in front of us. If we don't try to take action to stop this, we will come to an end of the world. At that time, its too late for us to regret with tears. From there, that is how i get the idea of drawing chimneys upside down below the eye which represent/look like the tears and also the blood which means the sorrow/ regret of us in future as we don't try to take action to protect the earth. Blood represent the lives of humans which means there will be huge number of people get hurt or die because of the hurricane which strengthen by global warming.

Colours Meanings
Red :
the strength, the danger or power of the global warming that effects us and the earth, heat of the global warming getting hotter as the red colour slowly getting darker, the blood/ lives of the living things such as humans.

White:
The safety of the earth and all the living things, the colour of the hurricane

Grey:
The shading of the hurricane, the sadness of the earth, humans and other living things as the global warming endanger our lives and causing a lot of damages such as hurricane destroys our homes, facilities, etc.

Black:
The power of global warming showing how strong/scary can it effects our earth and how serious is the effects of the global warming happening now.