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One of the things you'll hear critics of renewable energy often say is that the sun doesn't always shine and the wind doesn't always blow. But of course we know that isn't the case. If you go high enough from the earth's surface, the sun never stops shining and though no one has seen it, the wind ...

Take a look at this new airship from Aeros. The idea here is to combine the principles of propeller driven aircraft with that of the airship, like the infamous Hindenburg. That ship was able to travel at over 80 miles per hour carrying 100 tons with only 1200 horsepower. Of course, it also blew ...