Technology may be shrinking, but its reach has never been greater. Devices that once filled entire rooms can now fit on the tip of a needle. This miniaturization is not just about space-saving; it’s ...

In his 1963 scifi story “The Invincible,” the Polish writer Stanisław Lem imagined an artificial species of free-floating nanobots which roamed the atmosphere of a far-off planet. Like tiny bugs, the ...