I remember getting a bad greenish gash on my left arm a while back. No, it wasn’t from some weird infection. Here’s what happened: I was having an otherwise lovely day in my yard when I, unfortunately, tripped on my garden hose and fell arms first into my uncut grass. Amusingly, the length of my garden hose wasn’t even cluttering the yard but was in a neat and cleanly rolled pile. Still, I was there on the ground with a bad gash and chlorophyll coloring my skin.