What I ended up with was a simple equation:

1) Average BTUs consumed per household in each state

2) Adjusted by impact of weather and the size of homes in each state.

3) Then: A ranking by an estimate of CO2 emissions per Btu in each state.

Even leaving out the solar energy that Mark’s home gives back to the grid, his scored impressively on the EPA's scale, which ranges from zero to a hundred. Still, I couldn’t let a 90-point gap between our two homes stand.

When a home is old and inefficient, the conversation around achieving sustainability can quickly turn into a debate…

Realtors are more likely to market green homes when the city and/or state has adopted a policy that requires it.

Energy labeling programs add third-party verification when buying or selling a green home.

Like the body, the home is an interconnected system with parts that need to work cohesively for optimal health.

Our launch really began years ago with problems to fix in an old Victorian home.