Eco-News Roundup: Friday September 3
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.