Anthropogenic climate change
A carbon footprint is a complete set of greenhouse-gas by-product, person, event, product, service, person or organisation.
A carbon tax is a term used to describe a tax on greenhouse-gas emission. In reality, the carbon tax is an important instrument used to curb greenhouse-gas emissions.
Tipping point is an irreversible moment when the dreaded feedback loop begins. The most central issue today for the scientific community is the tipping point; have humans already went too far, and may we now be helpless to stop and reverse global warming?