Contents
1 Observed temperature changes
2 Initial causes of temperature changes (external forcings)
2.1 Greenhouse gases
2.2 Particulates and soot
2.3 Solar activity
3 Feedback
4 Climate models
5 Observed and expected environmental effects
5.1 Natural systems
5.2 Ecological systems
5.3 Long-term effects
5.4 Large-scale and abrupt impacts
6 Observed and expected effects on social systems
6.1 Food security
6.2 Habitat inundation
7 Proposed policy responses to global warming
7.1 Mitigation
7.2 Adaptation
8 Discourse about global warming
8.1 Political discussion
8.2 Scientific discussion
8.3 Discussion by the public and in popular media
8.3.1 Surveys of public opinion
9 Etymology
10 See also
11 Notes
12 Citations
13 References
14 Further reading
15 External links