a major worldwide tree planting campaign encouraging people, communities, business and industry, civil society organizations and governments to pledge to plant trees with the objective of planting at least one billion trees worldwide during 2007

seeks to prevent, assess, safely clean up, and sustainably reuse brownfields

projects by the World Land Trust that invest in "carbon offsets" including reforestation, restoration and improved land management

seeks to protect and regenerate endangered forest ecosystems and biodiversity by planting trees, encouraging renewable energy (especially biogas systems), and fostering sustainable development

an NGO partnership in India formed to prevent, arrest and reverse degradation of life support systems, partiularly land and water, so as to expand livelihood opportunities in a sustainable and equitable manner through people's participation