Exploring the biggest questions of our time with the help of the world's greatest thinkers. Host Manoush Zomorodi inspires us to learn more about the world, our communities, and most importantly, ourselves.Get more brainy miscellany with TED Radio Hour+. Your subscription supports the show and unlocks a sponsor-free feed. Learn more at plus.npr.org/ted
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#616: How Solar Got Cheap
Just a few years ago, solar power was an expensive luxury for the environmentally conscious. Now it's a good deal for lots of people. How did solar power get so cheap, so fast?