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Energy Storage
The lithium-ion alternatives could help create a safer, greener future.
Old coal mines can be converted into "gravity batteries" by retrofitting them with equipment that raises and lowers giant piles of sand.
Capacitors, acid batteries, and other methods of storing electric charges all lose energy over time. These gravity-fed batteries won't.
It was a particularly good year for biotech and medical technology. There were also notable advances in energy.
Lithium-ion batteries pose challenges for our transition toward renewable energy. Sodium-sulfur batteries might be a solution.
A team of scientists hopes deep-earth lithium could sustain America's vast demand for batteries. But extracting it won't be easy.
A "bio-battery" made from genetically engineered bacteria could store excess renewable energy and release it as needed.
Meet the power plant of the future.
We speak about it, argue over it, and even fight wars for it. We know it when we see it. But just what is energy, anyway? When it comes to being […]
One of the three basic circuit elements just got a lot smaller for the very first time, in what promises to be a trillion-dollar breakthrough. In the race for ever-improving […]