Researchers using satellite images found at least ten percent tree cover on more than one billion hectares of farmland.

VOA: special.2009.09.01

Miami recently found that its electricity bills were 10 percent lower in areas with more than 20 percent tree cover compared to those areas without any trees, the New Scientist reports.

CNN: All About: Cities and energy consumption

Last year, Wisdom Tree saw a 42 percent increase in new money flows as a percent of assets under management, greater than any other fund company, according to Morgan Stanley Research.

FORBES: If China Is So Awful, Why Is Wisdom Tree Launching A China Equity ETF?

In the United States more than 90 percent of fruit tree and vegetable varieties found in farmers' fields at the beginning of the twentieth century are no longer there.

CNN: Feeding the future: Saving agricultural biodiversity