Spinach can be engineered to detect explosives

Forget bomb-sniffing dogs, we can now use spinach to detect explosives. Scientists have implanted the leafy greens with tiny tubes that let them sense when an explosive is nearby and even alert someone by email.
This is all part of the field of "plant nanobionics," which is about embedding plants with tiny nanomaterials that basically give them superpowers. In today’s study, published in the journal Nature Materials, MIT researchers put sensors into the part of the spinach leaf where photo