Coffee grounds like these could be used to remove harmful hydrogen sulfide gas from the air (Photo: Steven Depolo)
Hopefully, you’re not just throwing your used coffee grounds in the garbage ... are you? Not only are they compostable, but they can also be used in robot hands, biofuel engines for cars, warm sports clothing, and as printer ink. Now, it turns out that they have yet another use – a scientist from The City College of New York has discovered that they’re good at soaking up stinky sewer gas.
Other Images from this Gallery