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The Search for the Solar System's Lost Planet

Is Twitter evil? Researchers probing the workings of the brain have found that it takes longer for feelings of social compassion and admiration to register on our neural circuits - and they worry that the rapid-fire effect of texting and tweeting could have "potentially negative consequences" for our moral fiber.

Pacific Gas & Electric is going to great lengths--all the way to space--in its quest for renewable energy.

The California utility on Monday said that it will seek approval from regulators to purchase 200 megawatts worth of solar energy delivered from stealth space solar power company Solaren over 15 years.

First 3-D Pictures of Solar Explosions Captured