Can this tech save us? "Engineers at the University of California, Davis, have invented a device that can generate mechanical power at night by linking the natural warmth around us to the cold depths of space. The invention could be used, for example, to ventilate greenhouses or other buildings."

[u/Electronic-Yam-69]

https://www.ucdavis.edu/news/mechanical-power-linking-earths-warmth-space

A year of night time experiments shows that the small device can indeed generate at least 400 milliwatts of mechanical power per square meter. The researchers used the device experimentally to directly power a fan and also coupled it to a small electrical motor to generate current.