Distorted world

Lately, I've been attending classes and conferences where presenters have been showing distorted world maps like this one,

1.

and this one,

2. 

and this, one.

3.

The above maps are called equal area cartograms, also known as density-equality maps.  Each of these cartograms shows resized territories (countries in this case) according to the variable being mapped.  

For the first map, the variable represented is total population.  The size of each country shows the relative proportion of the world's population living there. Can you guess the variables presented in the 2nd and 3rd cartograms?

Answers:  

For the 2nd cartogram, the size of each country shows the proportion of worldwide net imports of meat (in US$) that are received there.  Since it is only showing net import, countries that export more meat than they import shrink to nothing.

The third cartogram shows the proportion of all people aged 15 to 49 who are living with HIV in each country.

There are over 600 cartograms available at www.worldmapper.org and the categories range from religion, politics and education to natural disasters, violence and cause of death. I guarantee that there will be a variable or two that is of interest to you.  An excellent resource for enhancing presentations and generating dialogue.