Note the graph is on a logarithmic scale! The graph demonstrates the amazing improvements in solar technologies energy efficiency over just a few decades. This technology can end our dependence on foreign oil (and the massive military costs to secure it) and the dirty burning fossil fuel coal. With continued investment the technology can advance with the dedicated genius of scientists and innovators. They have already pushed us this far forward, government stimulus in this area is justifiable if done intelligently.
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"If today’s computer chips were the same size and cost as they were in 1975,
Apple’s iPod would cost $1 billion and be the size of a building."