How to reduce greenhouse gases emission into atmosphere?

Greenhouse gas emissions either can continue to increase, can be held steady at a particular level, or can be reduced to a lower level. Some consequences of the presence of greenhouse gases in the atmosphere may be unavoidable. Adaptation to climate change may require providing alternate sources of water and improving flood-control provisions such as levees.

The two main opportunities for reducing greenhouse gases are (1) reducing the amount of coal used to generate electricity and (2) reducing the amount of petroleum burned in the transportation system.