TechnologyTiny robots crawl through mouse's stomach to heal ulcers Bacterial infections in mice have been cleared up by bubble-propelled micromotors that swim through the stomach and release antibiotic payloads - and then dissolve in stomach acid News
TechnologySynthetic iris could let cameras react to light like our eyes do The iris in our eyes shrinks the pupil in bright light and enlarges it in the dark, and now an artificial version could do the same for both eyes and cameras News