Bacteria-scale robots that can run for months without human control are no longer a lab fantasy. Researchers have now built fully programmable micro-machines, smaller than a grain of salt, that can ...

The zinc-air batteries, which can generate up to a volt, are as thin as a human hair. A battery designed by MIT chemical engineer Michael Strano and colleagues could make it possible for cell-size ...

The big picture: The future of targeted drug delivery may hinge on the development of a tiny battery capable of powering cell-sized robots. MIT researchers have created such a battery and are now ...