Reactions | The World's Biggest Batteries Aren't What You Think | Season 6 | Episode 14 | PBS

When you think of batteries, you might think of the thing your watch or car needs to run. But as we move toward producing and storing more renewable energy (like solar and wind) we have to start thinking bigger. In this episode, we break down what a battery is and how they’re actually all around us--from lemons to lakes.