Eco express

Energy Thinking: Introduction

Excerpted from: http://www.greentreks.org
Keywords: renewable resources , alternative energy , fossil fuels , pollution , global warming , closing the loop , ecosystem , engineering , environment , manufacturing technology , nonrenewable resources , physical technology , renewable , sustainability ,

We take electricity for granted, but how often do we think about where it comes from, about its environmental costs, or what we can do differently? We do have a choice...