Posted on June 6, 2008 at 2:56pm
Carbon dioxide (CO2) is the most significant of the greenhouse gases, accounting for over 80 percent of global warming pollution. Atmospheric levels of CO2 are now higher than at any time in the past 420,000 years. And the changes we are witnessing - and those that are predicted - are largely due to human behavior.
Around 97 percent of the CO2 emitted by western industrialized countries comes from burning coal, oil and gas for energy. We spew approximately 25 billion metric tons of… Continue