Eco House Reuses 95% of Existing Building Materials

Lamar Advertising Co. has announced plans to start adding wind and solar energy systems to all billboards across Florida. The company intends to complete the operation by 2012 at the cost of about $12.5 million — the Department of Energy will provide $2.5 million.

In London; WhipCar is a new service for Neighbor to Neighbor Car Rentals. They expect to be able to help participants earn back some of the nearly $8,000 a year it takes to operate a car in London. In San Francisco, entrepreneur Sunil Paul is working on the same idea.