Links acerca do Planeta Terra...

Aguas subterrâneas

• http://e-geo.ineti.pt/geociencias/edicoes_online/diversos/agua_subterranea/poluicao.htm
• http://web.educom.pt/capag/projecto/poluagsu.htm
• http://www.drm.rj.gov.br/projeto.asp?chave=6
  

Solo

• http://www.cnpab.embrapa.br/educacao/baby/solo.html
  

Megacidades

• http://www.yearofplanetearth.org/content/downloads/portugal/brochura7_web.pdf
  

Terra e vida

• http://www.yearofplanetearth.org/content/downloads/portugal/brochura12_web.pdf

Terra e saúde

• http://www.yearofplanetearth.org/content/downloads/portugal/brochura4_web.pdf

Desastres naturais

• http://www.yearofplanetearth.org/content/downloads/portugal/brochura3_web.pdf
  

O interior da terra

• http://www.yearofplanetearth.org/content/downloads/portugal/brochura8_web.pdf
  

Alterações climáticas

• http://www.yearofplanetearth.org/content/downloads/portugal/brochura5_web.pdf