Small solar farms could deliver big ecological and energy benefits, researchers find.

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…

In The Matrix, human beings are a literal (and metaphorical) power source – specifically, they supply bio-electricity to our AI overlords. Fortunately, enslavement to robotic masters in a virtual-reality prison is completely unnecessary for biochemistry to…