Belching out black smoke, steam locomotives (SLs) boasted an unyielding presence on Japan’s rails decades ago.

Compressed air isn’t really a practical form of energy storage for headline uses like transport or heating, but it’s a fun thing to tinker with at the small scale. [Tom Stanton] is plenty experienced ...

This story originally appeared on Inside Climate News and is part of the Climate Desk collaboration. The need for long-duration energy storage, which helps to fill the longest gaps when wind and solar ...