RealClimate: Cosmic rays and clouds: Potential mechanisms

While reported observed correlations between cosmic rays and clouds are suggestive of effects of cosmic rays on clouds, cosmic rays rarely change without other inputs to the Earth system also changing (e.g. total solar irradiance or solar energetic particle events, both also driven by changes in the sun, but distinct from cosmic rays). Thus, we must understand the physical basis of how cosmic rays may affect clouds. However, it is clear that substantially more work needs to be done before we adequately understand these physical connections, and that no broad conclusions regarding the effect of cosmic rays on clouds and climate can (or should) be drawn from the first round of CLOUD results. Finally, there has been no significant trend in the cosmic ray flux over the 50 years, so while we cannot rule out cosmic-ray/cloud mechanisms being relevant for historical climate changes, they certainly have not been an important factor in recent climate change.

The Green Vision Of Paradise | Real Science

In order to protect the children, greens want the electricity off. They tried that in Japan earlier this year, and it didn’t go very smoothly.

Military Shifting Towards Clean-Energy Fuels

Not all of the Pentagon’s renewable-energy projects have gone smoothly. This month, the Energy Department announced a conditional commitment to back a $344 million loan for a $1 billion project to install solar panels at 160,000 locations on 124 military bases throughout the country. But last week, Solar City, the company that won the contract to put in what Energy Secretary Steven Chu described as “the largest domestic residential rooftop solar project in history,” announced it would not meet the Sept. 30 loan guarantee deadline. The delay could imperil the project.
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“We have to do this for our security,” Mabus said last week, adding that most of the new energy investments will pay for themselves in four to seven years. “The thing I want to attack the most is [that] this is some sort of fad or flavor of the moment.”