A secretive startup backed by Bill Gates has achieved a solar breakthrough aimed at saving the planet.
원문출처 : https://www.cnn.com/2019/11/19/business/heliogen-solar-energy-bill-gates/index.html
원문출처 : https://www.cnn.com/2019/11/19/business/heliogen-solar-energy-bill-gates/index.html