Climate change mitigation is an array of energy generation processes that shift the production of usable energy from methods involving the consumption of fossil fuels to alternative methods that do not emit greenhouse gases. Examples of mitigating processes include solar and wind systems, nuclear power, geothermal energy, hydroelectric dams, tidal systems and use of biomass. None of these methods generate a significant amount of greenhouse gases - however each has its own difficulties associated with its application.

For more information go to Wikipedia: Climate Change Mitigation

Climate change adaptation defines how to live with climate change, by easing some of the difficulties that come along with global warming and its effects. Adaptation differs from climate change mitigation in that adaptation does not attempt to stop or reduce the use of fossil fuels and the attendant emission of greenhouse gases.

For more information go to Wikipedia: Climate Change Adaptation

Geoengineering is a form of solar radiation management. It's purpose is to modify the Earth's atmosphere in ways that reduce the amount of solar radiation reaching the Earth, thereby reducing the extent of global warming. The concept of geoengineering has met with considerable skepticism in the scientific and engineering communities. There are potentially damaging effects that could arise from the methods that have been proposed.

For more information go to Wikipedia: Climate Engineering