Researchers create the world's smallest tic-tac-toe game with DNA
California Institute of Technology researchers have created the world's smallest tic-tac-toe game in which players place their X's and O's by adding special DNA tiles to the board. "Every move involves molecular self-reconfiguration for swapping in and out hundreds of DNA strands at once," a researcher said. The technology could be used to develop more sophisticated nanomachines with reconfigurable parts.