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Solar power is cheaper and more sustainable than our current coal-fueled power plants, so why haven't we made the switch? The real culprits here are the clouds, which make solar power difficult to control. Alexandros George Charalambides explains how solar towers and panels create electricity and how scientists are trying to create a system that can function even under cloud cover.

"There are just some things that are synonymous with "summertime snacks," and we can't think of a summer snack we enjoy quite as much as s'mores. But what would you do if you weren't allowed to have a fire or just didn't have the tools necessary for a fire? We came up with a pretty neat way to harness the heat and energy of the sun to create a solar powered cooker that makes a delicious batch of s'mores without a fire!"