Self Replicating Robots
Resistance is Futile
Each robot consists of several 4-inch (10-centimeter) cubes that have identical machinery, electromagnets to attach and detach to each other and a computer program for replication. The robots can bend and pick up and stack the cubes.
I for one welcome our new robotic overlords. Soon they'll be sending themselves back in time to find Sarah Connor.
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Link found via Engadget.