Some facts about climate change

Copenhagen climate conference is near.  Here are some facts one should bear in mind.

source: Jørgen Delman

Key variables	China	USA	Japan
Population (million)	1,320	302	128
Per capita GDP (US$) (PPP)	5,345	45,790	33,525
Energy use per unit of GDP (toe/ thousand US$)	0.26	0.17	0.12
Per capita CO2eq emissions (2003 data; tons)	3.2	19.5	9.8