Here's a quick map looking at CO2 emissions since 1820 - interesting graph to track by the way.
The easy to use help file looks like this
If you haven't seen Gapminder, you should. It is a great discussion starter for mathematics, statistics, philosophy, geography, social sciences, science ...
And if you haven't seen Hans' TED talks - they too are just incredible. Here's his 2007 talk I've referred to before ..