http://www.nytimes.com/2008/07/23/opinion/23smith.html?_r=2&ref=opinion&...
Scanned by: Mielle Sullivanover 3 years ago
AS we face $4.50 a gallon gas, we also know that alternative energy sources — coal, oil shale, ethanol, wind and ground-based solar — are either of limited potential, very expensive, require huge energy storage systems or harm the environment. There is, however, one potential future energy source that is environmentally friendly, has essentially unlimited potential and can be cost competitive with any renewable source: space solar power.