Scientists in South Korea have unveiled swarms of tiny magnetic robots that mimic the collaborative strength of ants to achieve incredible tasks, from carrying heavy cargo to navigating complex environments. These microrobots, described in a study published in the journal Device, could one day tackle challenges such as clearing clogged arteries or precisely guiding organisms. The team, led by Jeong Jae Wie from Hanyang University in Seoul, developed the robots to operate under a rotating magnetic field, enabling them to work together in swarms. Their potential applications include minimally invasive medical treatments and other tasks in difficult-to-reach environments. Wie and...