switching from chemical engineering to biological techniques

Leadership in Energy and Environmental Design (LEED) rating system,17which provides a national standard for evaluating and comparing green building performance.

Houses and commercial buildings, including their outdoor uses, account for 12 percent of America’s freshwater withdrawals.

the four main ways to generate hydrogen—upstream and downstream, from electricity and from natural gas—will

An example of waste familiar to everyone is sitting in a traffic jam on a congested freeway.

that every input had to be presumed waste until shown otherwise.

the average U.S. city, about a quarter; Bombay, one-third; Manila, over half.63 During

Paper accounts for about 2 percent of world trade and 2.5 percent of world industrial production;18 its

Architects and builders are creating structures that process their own wastewater, capture light, create energy, and provide habitat for wildlife and wealth for the community, all the while improving worker productivity, morale, and health.18