1.Wind and solar energy have been promoted as replacements for coal-burning electricity plants. Could wind and solar, in their current state of technology, provide sufficient electricity to replace coal???
Ok, I know a very good way to lose weight and get in serious shape to run at least 8 miles a day. But I am horrible at running like that because Im not in shape for that right now, but I can bike like Lance Armstrong. So I was wondeing...what is the equivalent for biking each day to running 8...