Whether you’re aware of it or not, you are part of one of the most ambitious projects we as humans have ever attempted: Rebuilding the world, pretty much from the ground up, in order to switch from fossil fuels to clean energy sources. It’s a major undertaking, one that will require staggering financial investment and the success of technologies many people have never heard of. In this season of The World as You'll Know It, science journalist Arielle Duhaime-Ross goes deep inside the world of cutting-edge climate technologies and asks: How is this all going to work? The answers — from some of the world’s most innovative and audacious thinkers, builders and investors — reveal the promise, obstacles and tradeoffs of a new clean-energy landscape that will shape the way we live.