“When it grows in a field, most spinach just sits there, absorbing light and nutrients and growing leaves. A new, engineered version of spinach does quite a bit more: It can detect dangerous levels of arsenic in the soil and then send a signal to a nearby cell phone to warn a farmer. It’s one example of a “nanobionic” sensor: plants that are being developed to serve as biological warning tools, not food.”
Full article:
https://www.fastcompany.com/90600720/scientists-have-turned-spinach-into-biological-sensors-that-email-environmental-alerts
Photo:
https://unsplash.com/photos/4VMqrwYfmDw