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Robotic capsule developed to deliver drugs to the gut

One reason that it's so difficult to deliver large protein drugs orally is that these drugs can't pass through the mucus barrier that lines the digestive tract. This means that insulin and most other "biologic drugs"—drugs consisting of proteins or nucleic acids—have to be injected or administered in a hospital.

Active matter, curved spaces: Mini robots learn to ‘swim’ on stretchy surfaces

When self-propelling objects interact with each other, interesting phenomena can occur. Birds align with each other when they flock together. People at a concert spontaneously create vortices when they nudge and bump into each other. Fire ants work together to create rafts that float on the water's surface.
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