Greenhouse effect

Videos:

http://www.youtube.com/watch?v=CxUK2TizQ4g

http://www.youtube.com/watch?v=LFNKfWyGxHw

With subtitles: http://www.youtube.com/watch?v=5zLuqSYF68E

 

Animation: http://earthguide.ucsd.edu/earthguide/diagrams/greenhouse/

Animated bbc: http://news.bbc.co.uk/2/shared/spl/hi/sci_nat/04/climate_change/html/greenhouse.stm

 

EPA site: http://www.epa.gov/climatechange/kids/greenhouse.html

 

Images: http://www.google.es/images?q=greenhouse+effect&rls=com.microsoft:es&oe=UTF-8&um=1&ie=UTF-8&source=univ&ei=32zVS7TnO9KZOOWj0IsO&sa=X&oi=image_result_group&ct=title&resnum=1&ved=0CBQQsAQwAA