How do buildings impact the environment?

Very interesting stats from the USGBC:

"The built environment has a profound impact on our natural environment, economy, health, and productivity. In the United States alone, buildings account for:
•    70% of electricity consumption,
•    39% of energy use,
•    39% of all carbon dioxide (CO2) emissions,
•    40% of raw materials use,
•    30% of waste output (136 million tons annually), and
•    12% of potable water consumption