Abstract :
Like the mask that conceals a superhero´s dark secret, the glass and plastic sheets encapsulating the world´s fastestgrowing solar panel design conceal an unlikely environmental hero: cadmium. Now this toxic heavy metal, together with tellurium, aims to make solar power cheap enough to compete with fossil fuels, perhaps within a decade. The latest sign of the technology´s rising fortunes is the decision by General Electric to enter the business next year.
