| The Human Effect On Climate Change And Global | | | | environmental policy, climate change usually refers to |
| Disasters | | | | changes in modern climate. It may be qualified as |
| Climate change is a change in the statistical | | | | anthropogenic climate change, more generally known |
| distribution of weather over periods of time that | | | | as "global warming" or "anthropogenic global warming" |
| range from decades to millions of years. It can be a | | | | (AGW). |
| change in the average weather or a change in the | | | | For information on temperature measurements over |
| distribution of weather events around an average | | | | various periods, and the data sources available, see |
| (for example, greater or fewer extreme weather | | | | temperature record. For attribution of climate change |
| events). Climate change may be limited to a specific | | | | over the past century, see attribution of recent |
| region, or may occur across the whole Earth. | | | | climate change. |
| In recent usage, especially in the context of | | | | |