Global warming

Is global warming a natural phenomena or is it caused by man? What are its main causes and consequences?
have you ever heard about greenhouse gases?
http://ec.europa.eu/environment/youth/air/air_greenhouse_en.html
Check this information on climate change
http://ec.europa.eu/environment/pubs/pdf/climate_change_youth_en.pdf

What can you do to stop global warming?
Find out some suggestions form the EU at http://ec.europa.eu/environment/climat/campaign/pdf/toolkit_en.pdf