Eco-News Roundup: Friday September 3

| Fri Sep. 3, 2010 7:21 AM EDT

News on health, energy, and the environment from our other blogs

Sunday Drivers: Free parking and what it means for walkability and real estate.

Carbon Ain't Free: Consumers like it better when they don't see carbon's price tag.

Pay to Play: BP's spent $93 million since the spill, on advertising.

Passing the Buck: Who should pay when an illegal immigrant needs expensive care?

Straight As: Auto industry protests letter-grade system for fuel efficiency.

Curves Ahead: Levi's new curvy jeans are advertised by skinny models.