An illustration of what our transportation will look like in the future, as we gravitate toward more energy-efficient practices. According to the U.S. Department of Energy's National Renewable Energy Laboratory, our highways will soon include:

Envirolet Composting Toilets
40 Questions to Ask When Choosing a Composting Toilet
Why Bamboo?
Countertop Performance Guide
Decentralized Wastewater Treatment Can Be Cost Effective and Economical
Identifying Inefficient Single-Family Homes With Utility Bill Analysis
Carbon Footprint of Single-Family Residential New Construction
NREL/Habitat for Humanity Zero Energy Home: A Cold-Climate Case Study for Affordable Zero Energy Homes
Nutrition Labels for Homes: A Way for Homebuyers to Make More Ecological, Economical Decisions
Energy-Efficient Air Conditioning