Most robots depend on controlled environments, because the real world is hard to get around in. The smaller the robot, the bigger this problem because little wheels (or legs) can take only little ...

Tiny robots small enough to slip through blood vessels are moving from speculative fiction into the medical lab, promising treatments that work from the inside out. Instead of relying on scalpels and ...

For decades, microscopic robots lived mostly in our imagination. Movies like "Fantastic Voyage" convinced us that tiny machines would one day cruise through the human body, fixing problems from the ...