In an article from Reuters - "Some people like to talk to their plants. Now, students at Singapore Polytechnic say they have created a plant that can communicate with people -- by glowing when it needs water."
Apparently they added a flourescent gene which glows under certain conditions.
I had a great idea with this...How about adding different color flourescent genes to infants so when they cry you know what they want based on the color they are glowing. For once babies would come with an instruction manual:
Red = Hungry
Blue = Wet
Green = Sick/Gas
Orange = I'm Hot
Purple = I'm Cold
Gold = I'm embarrassed to be in this family