> But what about the green blob on the Georgia-Florida border?

I was curious about that too. Apparently it's a very large swamp: http://en.wikipedia.org/wiki/Okefenokee_Swamp

> And what's up with south Texas?

Have you been to south Texas?

In the summer it's so hot your underwear hurts [1]

1) http://prairiehome.publicradio.org/programs/2013/04/20/scrip...

> Have you been to south Texas?

Nope. And it appears that those who do go there, don't stay.

> But what about the green blob on the Georgia-Florida border?

Okefenokee National Wildlife Refuge

Might be too late to chime in but not enough people know this:

Much of south Texas is shanty towns and illegal settlements, because immigration won't check documents until you are about 100 miles from the border. These people are largely ignored by the US population and not counted in census.

http://en.m.wikipedia.org/wiki/Colonia_(United_States)#Publi...

Pretty sure the big green blob is swamp/wetlands. The name Okefenokee rings a bell, but I might be confusing that with a different Florida swamp.