The world's biggest battery looks nothing like a battery | TED-Ed

The video explores various types of batteries, starting with lithium-ion batteries and their limitations, such as environmental impact and inefficiency for large-scale energy storage. It introduces pumped hydro storage using lakes and discusses the need for grid-scale batteries to achieve net-zero emissions. Innovative solutions like skyscraper batteries, molten salt storage, and bio batteries are presented as potential future technologies to meet global energy demands sustainably.

What new insight or understanding did you gain from this video?