(Photo by Rob Carr/Getty Images)

Researchers at MIT have been working on teaching spinach plants how to send emails.  Engineers used nanotechnology to develop plants that can emit a flourescent signal.  When that signal is picked up by an infrared camera, an email is sent to the researchers. They say the technology could potentially be used to detect explosives and send off a warning signal. It could also be used to detect pollution.

Listen to What Are You Talking About: