Dearth? Well, at this particular angle Africa is pretty much all you can see. And as for the European/ Asian continents, they're being covered up by the smoke. Also, this design is not supposed to be a comentary on global warming or any other sort of controversy, it's just what the title suggests.
@Barnash and Lashford:
How do these comments help in any way, shape or form?
@mr.pistachio:
Not sure if you are joking around, but I'm pretty sure you don't contribute to global warming when wearing this shirt :-)