Solar power is cleaner, more sustainable, and in many cases, less expensive than coal-fueled power plants, so why aren’t we only using solar power? Beyond the business and infrastructural challenges, TED Ed outlines some of the challenges that need to be solved in solar power science, including predicting solar irradiance, so that we can go 100% solar in the near future.

Related watching: how to build a solar oven, NOVA PBS: Solar Power, an amazing looking 24/7 Concentrated Solar Thermal Power tower, and a favorite that has helped us identify clouds: Why So Many Cloud Types?

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