The original goal of gathering a billion pledges in one year was exceeded in just five months. The billionth tree was in the ground in November 2007. By the end of January 2008, nearly 2.38 billion trees had been pledged and more than 1.8 billion planted. This publication can introduce but a fraction of the energy and results inspired by the Campaign. It is intended to convey the range of partners moved to action: from children to giant corporations, from womens groups to technocrats, dancers to diplomats, farmers to national governments. Trees are more significant than many of us might imagine. They commemorate births and lives lived. They beautify slums, farms and grand avenues. They provide shade, oxygen, and delight. They cool the Earth.