http://cleantechnica.com/2010/07/09/solar-powered-plane-completes-1st-24-hour-flight/ Clean Tech News & Views: Solar Energy News. Wind Energy News. EV News. & More. Tue, 30 Dec 2014 16:46:00 +0000 hourly 1 http://wordpress.org/?v=4.0.1 http://cleantechnica.com/2010/07/09/solar-powered-plane-completes-1st-24-hour-flight/#comment-9706 Sat, 10 Jul 2010 10:36:37 +0000 http://cleantechnica.com/?p=12564#comment-9706 I think this is really great concept. Because fuel prices hiking day by day and pollution also affect to ozone layer and due to global warming it is really worth for human lives. But I have a doubt, suppose the sun covered by the clouds then what to do? Is there any other options? I am just worried about it.

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