• January 26 Environmental Education Day.
• February 2: International Wetlands Day.
• March 5:  World Day for Energy Efficiency.
• March 14: Global Day of Action Against Dams in favor of Rivers, Water and Life.
• March 21: World Forestry Day.
• March 22: World Water Day.
• April 22: Earth Day.
• May 9: International Day for the Birds.
• May 17: Recycling Day.
• May 22: International Day for Biological Diversity.
• June 5: World Environment Day.
• June 8: World Oceans Day.
• June 12: World Day Acoustics Decontamination.
• June 17: World Day to Combat Desertification and Drought.
• June 26: International Day for the Preservation of the Tropical Forests.
• June 28: World Day & Aacute; tree.
• July 7: World Day for soil conservation.
• July 11: World Population Day.
• August 4: Day Latin American fruit.
• August 5: Day Huemul.
• September 16: International Day for the Preservation of the Ozone Layer.
• September 29: World Day of the Seas.
• October 1st Saturday: World Habitat Day.
• October 1st Saturday: American Water Day.
• October 2nd Wednesday: International Day for Natural Disaster Reduction.
• October 4: World Animal Day.
• October 18:Day of the Protection of Nature.
• October 21: World Day of saving energy.

• November 1: World Ecology Day.
• November 3: World Day of clean air.

November 4 - 6: EXPO En Verde Ser 2011

• December 11: International Mountain Day.