In a new paper, Public Procurement and the Private Supply of Green Buildings, authors Timothy Simcoe and Michael W. Toffel show that there is, indeed, a spillover effect to the private sector.

FORBES: How Governments Spur Private-Sector Demand for Green Buildings

Hands across the aisle: George W. Bush got one thing right: He liked green cars, especially the hydrogen-powered ones.

FORBES: 5 New Year's Resolutions For Green Cars

The group said it did consider the candidacy of consumer advocate Ralph Nader, from the Green Party, but decided it was more important to back a candidate who could defeat Texas Gov. George W. Bush, .

CNN: Sierra Club endorses Gore for president