Sewer Robots Sift Data From Raw Human Waste

I've always had a thing for Mario's brother Luigi. So when I recently heard of another Luigi--also tall, thin, and willing to drop into sewers--I had to meet him. At MIT's Senseable City Lab, a team of researchers recently premiered a second-generation robot named Luigi who sifts through sewage as a way to improve public health. Luckily, I didn't have to brave the smells of the sewer to meet him. In a small campus makerspace stacked to the ceiling with batteries, wires, and glue, architects Newsha Ghaeli and Alaa AlRadwan introduce me to Luigi, then proceed to do what all good inventors do: repeatedly try to turn the robot on.