The website that help me develop my idea of create the poster

http://www.70south.com/latest-antarctic-news/march-of-the-penguins-threathened-by-melting-ice/

http://www.telegraph.co.uk/earth/main.jhtml?xml=/earth/2007/12/11/eapeng111.xml

http://findarticles.com/p/articles/mi_m1170/is_2000_Nov-Dec/ai_66309910

http://www.dailygalaxy.com/my_weblog/2008/05/nasa-satellite.html