Kinda cool: certain magnetic fields make metal form lifelike shapes and motion

Ca. 1984, Marvel published a comic book about a race of giant alient robots who, the origin story read, came from a planet where “life has evolved not through carbon bonding, but via ‘naturally-occurring gears, levers, and pulleys‘.”
Star Trek has done episodes about life evolving from silicon and microscopic robots. Now, scientists have found a way to generate movement and random, lifelike combinations from metal filings by putting them in certain electric fields. They think it will provide clues to the origins of life itself. Don’t know about that, but it would be cool if there really is a Cybertron somewhere, out there.

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