Energy:
McKinsey Quarterly - A Cost Curve for Greenhouse Gas Reduction. An interesting article on the costs to curb CO emissions. Check out the graph on pg 38 (4th page in) and notice that building insulation has the best cost to benefit ratio.

The Economic Benefits of Investing in Clean Energy. Article from the Center for American Progress.

Break down of electrical usage in NY homes.

Building Science:
Good presentation on basic building science. In PDF format.

Health and Safety:
Toxic Dust. An interesting article from the Environmental Working Group about the toxic stuff in dust.

Carbon Monoxide:
Wikipedia article on CO
NY Times article on three deaths due to CO poisoning.
EPA web site on CO

UL standards on CO alarms:
In the UL2034 Standard, Underwriters Laboratories specifies response times for CO alarms as follows:
At 70 parts per million: Unit must sound alarm within 60-240 minutes.
At 150 parts per million: Unit must sound alarm within 10-50 minutes.
At 400 parts per million: Unit must sound alarm within 4-15 minutes.
Source: http://www.alliedsalescompany.com/ul/2034.pdf

General:
Green homes sell faster.

DOE insulation recommendation by ZIP code. The ZIP-Code Insulation Program will tell you the most economic insulation level for your new or existing house.