Istituto Italiano di Tecnologia

Scientists have replicated the seed-delivery system used by wild oats, resulting in a seed-carrying bio-hybrid "robot." Scores of the tiny devices could one day be utilized for much easier, more effective aerial seeding of crops or even new forests.

Trees such as maples have "fruits" known as samaras, which consist of a seed joined to a papery wing. Scientists have now created artificial samaras, which could be used to quickly and easily monitor soil temperature from the air.

Italian researchers have created a novel 4D-printed biodegradable 'seed robot' that changes shape in response to changes in humidity and can navigate through the soil. The device has great potential as a new way of monitoring the environment.

Although it's generally not a good idea to swallow batteries, ingestible medical electronic devices often have batteries in them. A new type of battery could make such devices safer to use, as it's made entirely of edible ingredients.

Just because a food item may be frozen when you buy it, that doesn't mean it wasn't thawed and refrozen somewhere along the line. A new self-powered sensor, however, would change color to let you know if that had happened.