<ul><li>Nanoengineers have designed tiny magnetic robots that swarm together like ants to pick up objects many times their size or even form rafts to float on water.</li><li>The robots assemble through magnetic attractions and respond to and be guided by magnetic fields.</li><li>They can climb obstacles, transport cargo, and unclog tubes resembling blocked blood vessels.</li><li>However, they require higher levels of autonomy for real-world applications in complex or confined spaces.</li></ul>

Watch swarms of ant-like microrobots lift heavy objects and more

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