This map appeared in today's NY Times showing household CO₂ emissions broken down by census-block tracts. There's a lesson to be learned from the distribution here.  Downtown Atlanta, with its dense, multifamily housing, is well below the national average in terms of tons of CO₂ emitted. But as one moves away from downtown toward the less dense, single-family neighborhoods, the rate jumps up significantly to well above the national average.

The pattern is interrupted by areas close to the interstates and major arterials. Gor a long time, those have been the only places where any semblance of density has been allowed. Not always the walkable, bikeable, transit-connected, mixed-use stuff we should be building, but density none the less.

So what is that lesson?  Single-family neighborhoods are killing the planet.  Do you part - burn down a suburb today!  (Just kidding to make a point!  Don't burn down anything - that's just more emissions!)

I zoomed in on the online map enough to identify my own street (I'm on the innermost tips of one of those high-emission fingers).  The map indicated that emissions here are higher than the national average, or 40-50 tons per household, although the transportation, housing, food, goods, and services sources were about average, so I'm not sure what the driver is.