Interwebz resources for make benefit glorious nation of USA (transportation, green)

[OyCrumbler]

Here's a good one covering transportation.

The Transport Politic

And here's one about urban green spaces. I believe they had studies on what cities had the highest/lowest percentage of total green space and per capita green space.

Urban Greenspace Institute: Home Page (http://www.urbangreenspaces.org/index.htm - broken link)